Home / 20,429.11-28,167.64-14,754.79

Finding the Fourth Proportional to 20,429.11, 28,167.64 and 14,754.79

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Solution

The fourth proportional to 20,429.11, 28,167.64 and 14,754.79 is: 20,343.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.11 : 28,167.64 = 14,754.79 : x
  2. Step 2: Convert to fraction form
    20,429.11/28,167.64 = 14,754.79/x
  3. Step 3: Cross multiply
    20,429.11x = 28,167.64 × 14,754.79
  4. Step 4: Simplify right side
    20,429.11x = 415,607,613.00
  5. Step 5: Solve for x
    x = 415,607,613.00/20,429.11
  6. Step 6: Final answer
    x = 20,343.89

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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.