Home / 15,425.52-21,286.68-8,710.56

Finding the Fourth Proportional to 15,425.52, 21,286.68 and 8,710.56

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Solution

The fourth proportional to 15,425.52, 21,286.68 and 8,710.56 is: 12,020.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,425.52 : 21,286.68 = 8,710.56 : x
  2. Step 2: Convert to fraction form
    15,425.52/21,286.68 = 8,710.56/x
  3. Step 3: Cross multiply
    15,425.52x = 21,286.68 × 8,710.56
  4. Step 4: Simplify right side
    15,425.52x = 185,418,903.34
  5. Step 5: Solve for x
    x = 185,418,903.34/15,425.52
  6. Step 6: Final answer
    x = 12,020.27

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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.