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Finding the Fourth Proportional to 15,458.28, 21,332.31 and 8,652.31

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Solution

The fourth proportional to 15,458.28, 21,332.31 and 8,652.31 is: 11,940.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,458.28 : 21,332.31 = 8,652.31 : x
  2. Step 2: Convert to fraction form
    15,458.28/21,332.31 = 8,652.31/x
  3. Step 3: Cross multiply
    15,458.28x = 21,332.31 × 8,652.31
  4. Step 4: Simplify right side
    15,458.28x = 184,573,652.47
  5. Step 5: Solve for x
    x = 184,573,652.47/15,458.28
  6. Step 6: Final answer
    x = 11,940.12

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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.