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Finding the Fourth Proportional to 18,229.20, 27,343.80 and 15,925.20

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Solution

The fourth proportional to 18,229.20, 27,343.80 and 15,925.20 is: 23,887.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,229.20 : 27,343.80 = 15,925.20 : x
  2. Step 2: Convert to fraction form
    18,229.20/27,343.80 = 15,925.20/x
  3. Step 3: Cross multiply
    18,229.20x = 27,343.80 × 15,925.20
  4. Step 4: Simplify right side
    18,229.20x = 435,455,483.76
  5. Step 5: Solve for x
    x = 435,455,483.76/18,229.20
  6. Step 6: Final answer
    x = 23,887.80

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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.