Home / 21,925.14-30,254.85-13,423.61

Finding the Fourth Proportional to 21,925.14, 30,254.85 and 13,423.61

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Solution

The fourth proportional to 21,925.14, 30,254.85 and 13,423.61 is: 18,523.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,925.14 : 30,254.85 = 13,423.61 : x
  2. Step 2: Convert to fraction form
    21,925.14/30,254.85 = 13,423.61/x
  3. Step 3: Cross multiply
    21,925.14x = 30,254.85 × 13,423.61
  4. Step 4: Simplify right side
    21,925.14x = 406,129,155.73
  5. Step 5: Solve for x
    x = 406,129,155.73/21,925.14
  6. Step 6: Final answer
    x = 18,523.45

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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.