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Finding the Fourth Proportional to 12,591.16, 18,959.91 and 9,327.40

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Solution

The fourth proportional to 12,591.16, 18,959.91 and 9,327.40 is: 14,045.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.16 : 18,959.91 = 9,327.40 : x
  2. Step 2: Convert to fraction form
    12,591.16/18,959.91 = 9,327.40/x
  3. Step 3: Cross multiply
    12,591.16x = 18,959.91 × 9,327.40
  4. Step 4: Simplify right side
    12,591.16x = 176,846,664.53
  5. Step 5: Solve for x
    x = 176,846,664.53/12,591.16
  6. Step 6: Final answer
    x = 14,045.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.