Home / 20,609,712.90-30,914,569.35-10,406,045.70

Finding the Fourth Proportional to 20,609,712.90, 30,914,569.35 and 10,406,045.70

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Solution

The fourth proportional to 20,609,712.90, 30,914,569.35 and 10,406,045.70 is: 15,609,068.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609,712.90 : 30,914,569.35 = 10,406,045.70 : x
  2. Step 2: Convert to fraction form
    20,609,712.90/30,914,569.35 = 10,406,045.70/x
  3. Step 3: Cross multiply
    20,609,712.90x = 30,914,569.35 × 10,406,045.70
  4. Step 4: Simplify right side
    20,609,712.90x = 321,698,421,451,919.31
  5. Step 5: Solve for x
    x = 321,698,421,451,919.31/20,609,712.90
  6. Step 6: Final answer
    x = 15,609,068.55

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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.