Home / 20,761,765.20-31,142,647.80-19,566,022.95

Finding the Fourth Proportional to 20,761,765.20, 31,142,647.80 and 19,566,022.95

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Solution

The fourth proportional to 20,761,765.20, 31,142,647.80 and 19,566,022.95 is: 29,349,034.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761,765.20 : 31,142,647.80 = 19,566,022.95 : x
  2. Step 2: Convert to fraction form
    20,761,765.20/31,142,647.80 = 19,566,022.95/x
  3. Step 3: Cross multiply
    20,761,765.20x = 31,142,647.80 × 19,566,022.95
  4. Step 4: Simplify right side
    20,761,765.20x = 609,337,761,578,567
  5. Step 5: Solve for x
    x = 609,337,761,578,567/20,761,765.20
  6. Step 6: Final answer
    x = 29,349,034.43

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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.