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Finding the Fourth Proportional to 28,431.96, 42,652.80 and 9,710.97

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Solution

The fourth proportional to 28,431.96, 42,652.80 and 9,710.97 is: 14,568.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431.96 : 42,652.80 = 9,710.97 : x
  2. Step 2: Convert to fraction form
    28,431.96/42,652.80 = 9,710.97/x
  3. Step 3: Cross multiply
    28,431.96x = 42,652.80 × 9,710.97
  4. Step 4: Simplify right side
    28,431.96x = 414,200,061.22
  5. Step 5: Solve for x
    x = 414,200,061.22/28,431.96
  6. Step 6: Final answer
    x = 14,568.11

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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.