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Finding the Fourth Proportional to 12,171.18, 18,264.96 and 7,901.10

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Solution

The fourth proportional to 12,171.18, 18,264.96 and 7,901.10 is: 11,856.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,171.18 : 18,264.96 = 7,901.10 : x
  2. Step 2: Convert to fraction form
    12,171.18/18,264.96 = 7,901.10/x
  3. Step 3: Cross multiply
    12,171.18x = 18,264.96 × 7,901.10
  4. Step 4: Simplify right side
    12,171.18x = 144,313,275.46
  5. Step 5: Solve for x
    x = 144,313,275.46/12,171.18
  6. Step 6: Final answer
    x = 11,856.97

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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.