Home / 21,451.14-29,616.99-13,397.04

Finding the Fourth Proportional to 21,451.14, 29,616.99 and 13,397.04

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Solution

The fourth proportional to 21,451.14, 29,616.99 and 13,397.04 is: 18,496.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.14 : 29,616.99 = 13,397.04 : x
  2. Step 2: Convert to fraction form
    21,451.14/29,616.99 = 13,397.04/x
  3. Step 3: Cross multiply
    21,451.14x = 29,616.99 × 13,397.04
  4. Step 4: Simplify right side
    21,451.14x = 396,779,999.71
  5. Step 5: Solve for x
    x = 396,779,999.71/21,451.14
  6. Step 6: Final answer
    x = 18,496.92

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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.