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Finding the Fourth Proportional to 28,652.29, 42,979 and 9,932.93

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Solution

The fourth proportional to 28,652.29, 42,979 and 9,932.93 is: 14,899.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,652.29 : 42,979 = 9,932.93 : x
  2. Step 2: Convert to fraction form
    28,652.29/42,979 = 9,932.93/x
  3. Step 3: Cross multiply
    28,652.29x = 42,979 × 9,932.93
  4. Step 4: Simplify right side
    28,652.29x = 426,907,398.47
  5. Step 5: Solve for x
    x = 426,907,398.47/28,652.29
  6. Step 6: Final answer
    x = 14,899.59

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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.