Home / 28,013.48-42,005.90-9,286.76

Finding the Fourth Proportional to 28,013.48, 42,005.90 and 9,286.76

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Solution

The fourth proportional to 28,013.48, 42,005.90 and 9,286.76 is: 13,925.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.48 : 42,005.90 = 9,286.76 : x
  2. Step 2: Convert to fraction form
    28,013.48/42,005.90 = 9,286.76/x
  3. Step 3: Cross multiply
    28,013.48x = 42,005.90 × 9,286.76
  4. Step 4: Simplify right side
    28,013.48x = 390,098,711.88
  5. Step 5: Solve for x
    x = 390,098,711.88/28,013.48
  6. Step 6: Final answer
    x = 13,925.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.