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Finding the Fourth Proportional to 28,560.76, 42,842.73 and 8,837.78

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Solution

The fourth proportional to 28,560.76, 42,842.73 and 8,837.78 is: 13,257.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,560.76 : 42,842.73 = 8,837.78 : x
  2. Step 2: Convert to fraction form
    28,560.76/42,842.73 = 8,837.78/x
  3. Step 3: Cross multiply
    28,560.76x = 42,842.73 × 8,837.78
  4. Step 4: Simplify right side
    28,560.76x = 378,634,622.34
  5. Step 5: Solve for x
    x = 378,634,622.34/28,560.76
  6. Step 6: Final answer
    x = 13,257.16

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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.