Home / 15,685.68-21,593.49-13,590.32

Finding the Fourth Proportional to 15,685.68, 21,593.49 and 13,590.32

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Solution

The fourth proportional to 15,685.68, 21,593.49 and 13,590.32 is: 18,708.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,685.68 : 21,593.49 = 13,590.32 : x
  2. Step 2: Convert to fraction form
    15,685.68/21,593.49 = 13,590.32/x
  3. Step 3: Cross multiply
    15,685.68x = 21,593.49 × 13,590.32
  4. Step 4: Simplify right side
    15,685.68x = 293,462,280.09
  5. Step 5: Solve for x
    x = 293,462,280.09/15,685.68
  6. Step 6: Final answer
    x = 18,708.92

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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.