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Finding the Fourth Proportional to 18,043,323.40, 27,064,985.10 and 8,477,385.40

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Solution

The fourth proportional to 18,043,323.40, 27,064,985.10 and 8,477,385.40 is: 12,716,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,043,323.40 : 27,064,985.10 = 8,477,385.40 : x
  2. Step 2: Convert to fraction form
    18,043,323.40/27,064,985.10 = 8,477,385.40/x
  3. Step 3: Cross multiply
    18,043,323.40x = 27,064,985.10 × 8,477,385.40
  4. Step 4: Simplify right side
    18,043,323.40x = 229,440,309,537,957.56
  5. Step 5: Solve for x
    x = 229,440,309,537,957.56/18,043,323.40
  6. Step 6: Final answer
    x = 12,716,078.10

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.