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Finding the Fourth Proportional to 28,489.53, 42,734.16 and 7,713.03

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Solution

The fourth proportional to 28,489.53, 42,734.16 and 7,713.03 is: 11,569.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.53 : 42,734.16 = 7,713.03 : x
  2. Step 2: Convert to fraction form
    28,489.53/42,734.16 = 7,713.03/x
  3. Step 3: Cross multiply
    28,489.53x = 42,734.16 × 7,713.03
  4. Step 4: Simplify right side
    28,489.53x = 329,609,858.10
  5. Step 5: Solve for x
    x = 329,609,858.10/28,489.53
  6. Step 6: Final answer
    x = 11,569.51

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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.