Home / 15,439.82-21,291.33-13,732.93

Finding the Fourth Proportional to 15,439.82, 21,291.33 and 13,732.93

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Solution

The fourth proportional to 15,439.82, 21,291.33 and 13,732.93 is: 18,937.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.82 : 21,291.33 = 13,732.93 : x
  2. Step 2: Convert to fraction form
    15,439.82/21,291.33 = 13,732.93/x
  3. Step 3: Cross multiply
    15,439.82x = 21,291.33 × 13,732.93
  4. Step 4: Simplify right side
    15,439.82x = 292,392,344.50
  5. Step 5: Solve for x
    x = 292,392,344.50/15,439.82
  6. Step 6: Final answer
    x = 18,937.55

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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.