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Finding the Fourth Proportional to 28,607.10, 42,900.11 and 9,882.33

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Solution

The fourth proportional to 28,607.10, 42,900.11 and 9,882.33 is: 14,819.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,607.10 : 42,900.11 = 9,882.33 : x
  2. Step 2: Convert to fraction form
    28,607.10/42,900.11 = 9,882.33/x
  3. Step 3: Cross multiply
    28,607.10x = 42,900.11 × 9,882.33
  4. Step 4: Simplify right side
    28,607.10x = 423,953,044.06
  5. Step 5: Solve for x
    x = 423,953,044.06/28,607.10
  6. Step 6: Final answer
    x = 14,819.85

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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.