Home / 21,685.87-29,923.09-12,613.24

Finding the Fourth Proportional to 21,685.87, 29,923.09 and 12,613.24

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Solution

The fourth proportional to 21,685.87, 29,923.09 and 12,613.24 is: 17,404.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,685.87 : 29,923.09 = 12,613.24 : x
  2. Step 2: Convert to fraction form
    21,685.87/29,923.09 = 12,613.24/x
  3. Step 3: Cross multiply
    21,685.87x = 29,923.09 × 12,613.24
  4. Step 4: Simplify right side
    21,685.87x = 377,427,115.71
  5. Step 5: Solve for x
    x = 377,427,115.71/21,685.87
  6. Step 6: Final answer
    x = 17,404.29

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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.