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Finding the Fourth Proportional to 29,295.70, 40,428.17 and 15,866.92

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Solution

The fourth proportional to 29,295.70, 40,428.17 and 15,866.92 is: 21,896.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,295.70 : 40,428.17 = 15,866.92 : x
  2. Step 2: Convert to fraction form
    29,295.70/40,428.17 = 15,866.92/x
  3. Step 3: Cross multiply
    29,295.70x = 40,428.17 × 15,866.92
  4. Step 4: Simplify right side
    29,295.70x = 641,470,539.14
  5. Step 5: Solve for x
    x = 641,470,539.14/29,295.70
  6. Step 6: Final answer
    x = 21,896.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.