Home / 20,761,338.70-31,142,008.05-19,565,596.45

Finding the Fourth Proportional to 20,761,338.70, 31,142,008.05 and 19,565,596.45

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Solution

The fourth proportional to 20,761,338.70, 31,142,008.05 and 19,565,596.45 is: 29,348,394.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761,338.70 : 31,142,008.05 = 19,565,596.45 : x
  2. Step 2: Convert to fraction form
    20,761,338.70/31,142,008.05 = 19,565,596.45/x
  3. Step 3: Cross multiply
    20,761,338.70x = 31,142,008.05 × 19,565,596.45
  4. Step 4: Simplify right side
    20,761,338.70x = 609,311,962,148,951.38
  5. Step 5: Solve for x
    x = 609,311,962,148,951.38/20,761,338.70
  6. Step 6: Final answer
    x = 29,348,394.68

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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.