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Finding the Fourth Proportional to 18,287.55, 27,442.28 and 16,800.39

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Solution

The fourth proportional to 18,287.55, 27,442.28 and 16,800.39 is: 25,210.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,287.55 : 27,442.28 = 16,800.39 : x
  2. Step 2: Convert to fraction form
    18,287.55/27,442.28 = 16,800.39/x
  3. Step 3: Cross multiply
    18,287.55x = 27,442.28 × 16,800.39
  4. Step 4: Simplify right side
    18,287.55x = 461,041,006.49
  5. Step 5: Solve for x
    x = 461,041,006.49/18,287.55
  6. Step 6: Final answer
    x = 25,210.65

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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.