Home / 28,134.96-38,825.78-15,559.71

Finding the Fourth Proportional to 28,134.96, 38,825.78 and 15,559.71

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Solution

The fourth proportional to 28,134.96, 38,825.78 and 15,559.71 is: 21,472.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.96 : 38,825.78 = 15,559.71 : x
  2. Step 2: Convert to fraction form
    28,134.96/38,825.78 = 15,559.71/x
  3. Step 3: Cross multiply
    28,134.96x = 38,825.78 × 15,559.71
  4. Step 4: Simplify right side
    28,134.96x = 604,117,799.53
  5. Step 5: Solve for x
    x = 604,117,799.53/28,134.96
  6. Step 6: Final answer
    x = 21,472.14

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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.