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Finding the Fourth Proportional to 18,114.56, 27,280.64 and 15,947.20

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Solution

The fourth proportional to 18,114.56, 27,280.64 and 15,947.20 is: 24,016.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,114.56 : 27,280.64 = 15,947.20 : x
  2. Step 2: Convert to fraction form
    18,114.56/27,280.64 = 15,947.20/x
  3. Step 3: Cross multiply
    18,114.56x = 27,280.64 × 15,947.20
  4. Step 4: Simplify right side
    18,114.56x = 435,049,822.21
  5. Step 5: Solve for x
    x = 435,049,822.21/18,114.56
  6. Step 6: Final answer
    x = 24,016.58

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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.