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Finding the Fourth Proportional to 15,903,761.70, 23,855,642.55 and 7,817,985.30

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Solution

The fourth proportional to 15,903,761.70, 23,855,642.55 and 7,817,985.30 is: 11,726,977.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903,761.70 : 23,855,642.55 = 7,817,985.30 : x
  2. Step 2: Convert to fraction form
    15,903,761.70/23,855,642.55 = 7,817,985.30/x
  3. Step 3: Cross multiply
    15,903,761.70x = 23,855,642.55 × 7,817,985.30
  4. Step 4: Simplify right side
    15,903,761.70x = 186,503,062,777,954.53
  5. Step 5: Solve for x
    x = 186,503,062,777,954.53/15,903,761.70
  6. Step 6: Final answer
    x = 11,726,977.95

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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.