Home / 20,860,155.40-31,290,233.10-10,656,488.20

Finding the Fourth Proportional to 20,860,155.40, 31,290,233.10 and 10,656,488.20

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Solution

The fourth proportional to 20,860,155.40, 31,290,233.10 and 10,656,488.20 is: 15,984,732.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860,155.40 : 31,290,233.10 = 10,656,488.20 : x
  2. Step 2: Convert to fraction form
    20,860,155.40/31,290,233.10 = 10,656,488.20/x
  3. Step 3: Cross multiply
    20,860,155.40x = 31,290,233.10 × 10,656,488.20
  4. Step 4: Simplify right side
    20,860,155.40x = 333,443,999,805,399.44
  5. Step 5: Solve for x
    x = 333,443,999,805,399.44/20,860,155.40
  6. Step 6: Final answer
    x = 15,984,732.30

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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.