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Finding the Fourth Proportional to 18,588.20, 27,921.18 and 15,672.20

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Solution

The fourth proportional to 18,588.20, 27,921.18 and 15,672.20 is: 23,541.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,588.20 : 27,921.18 = 15,672.20 : x
  2. Step 2: Convert to fraction form
    18,588.20/27,921.18 = 15,672.20/x
  3. Step 3: Cross multiply
    18,588.20x = 27,921.18 × 15,672.20
  4. Step 4: Simplify right side
    18,588.20x = 437,586,317.20
  5. Step 5: Solve for x
    x = 437,586,317.20/18,588.20
  6. Step 6: Final answer
    x = 23,541.08

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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.