Home / 12,061,090.80-18,091,636.20-8,659,868.40

Finding the Fourth Proportional to 12,061,090.80, 18,091,636.20 and 8,659,868.40

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Solution

The fourth proportional to 12,061,090.80, 18,091,636.20 and 8,659,868.40 is: 12,989,802.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,061,090.80 : 18,091,636.20 = 8,659,868.40 : x
  2. Step 2: Convert to fraction form
    12,061,090.80/18,091,636.20 = 8,659,868.40/x
  3. Step 3: Cross multiply
    12,061,090.80x = 18,091,636.20 × 8,659,868.40
  4. Step 4: Simplify right side
    12,061,090.80x = 156,671,188,632,676.09
  5. Step 5: Solve for x
    x = 156,671,188,632,676.09/12,061,090.80
  6. Step 6: Final answer
    x = 12,989,802.60

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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.