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Finding the Fourth Proportional to 28,232.59, 38,960.00 and 15,658.51

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Solution

The fourth proportional to 28,232.59, 38,960.00 and 15,658.51 is: 21,608.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,232.59 : 38,960.00 = 15,658.51 : x
  2. Step 2: Convert to fraction form
    28,232.59/38,960.00 = 15,658.51/x
  3. Step 3: Cross multiply
    28,232.59x = 38,960.00 × 15,658.51
  4. Step 4: Simplify right side
    28,232.59x = 610,055,471.31
  5. Step 5: Solve for x
    x = 610,055,471.31/28,232.59
  6. Step 6: Final answer
    x = 21,608.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.