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Finding the Fourth Proportional to 13,477,073.60, 20,215,610.40 and 12,021,406.40

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Solution

The fourth proportional to 13,477,073.60, 20,215,610.40 and 12,021,406.40 is: 18,032,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,477,073.60 : 20,215,610.40 = 12,021,406.40 : x
  2. Step 2: Convert to fraction form
    13,477,073.60/20,215,610.40 = 12,021,406.40/x
  3. Step 3: Cross multiply
    13,477,073.60x = 20,215,610.40 × 12,021,406.40
  4. Step 4: Simplify right side
    13,477,073.60x = 243,020,068,242,466.56
  5. Step 5: Solve for x
    x = 243,020,068,242,466.56/13,477,073.60
  6. Step 6: Final answer
    x = 18,032,109.60

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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.