Home / 20,609,792.40-30,914,688.60-10,406,125.20

Finding the Fourth Proportional to 20,609,792.40, 30,914,688.60 and 10,406,125.20

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Solution

The fourth proportional to 20,609,792.40, 30,914,688.60 and 10,406,125.20 is: 15,609,187.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609,792.40 : 30,914,688.60 = 10,406,125.20 : x
  2. Step 2: Convert to fraction form
    20,609,792.40/30,914,688.60 = 10,406,125.20/x
  3. Step 3: Cross multiply
    20,609,792.40x = 30,914,688.60 × 10,406,125.20
  4. Step 4: Simplify right side
    20,609,792.40x = 321,702,120,090,612.69
  5. Step 5: Solve for x
    x = 321,702,120,090,612.69/20,609,792.40
  6. Step 6: Final answer
    x = 15,609,187.80

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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.