Home / 21,695.92-29,863.32-15,397.36

Finding the Fourth Proportional to 21,695.92, 29,863.32 and 15,397.36

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Solution

The fourth proportional to 21,695.92, 29,863.32 and 15,397.36 is: 21,193.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,695.92 : 29,863.32 = 15,397.36 : x
  2. Step 2: Convert to fraction form
    21,695.92/29,863.32 = 15,397.36/x
  3. Step 3: Cross multiply
    21,695.92x = 29,863.32 × 15,397.36
  4. Step 4: Simplify right side
    21,695.92x = 459,816,288.84
  5. Step 5: Solve for x
    x = 459,816,288.84/21,695.92
  6. Step 6: Final answer
    x = 21,193.68

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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.