Home / 21,429.42-29,613.28-16,115.02

Finding the Fourth Proportional to 21,429.42, 29,613.28 and 16,115.02

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Solution

The fourth proportional to 21,429.42, 29,613.28 and 16,115.02 is: 22,269.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.42 : 29,613.28 = 16,115.02 : x
  2. Step 2: Convert to fraction form
    21,429.42/29,613.28 = 16,115.02/x
  3. Step 3: Cross multiply
    21,429.42x = 29,613.28 × 16,115.02
  4. Step 4: Simplify right side
    21,429.42x = 477,218,599.47
  5. Step 5: Solve for x
    x = 477,218,599.47/21,429.42
  6. Step 6: Final answer
    x = 22,269.32

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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.