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Finding the Fourth Proportional to 18,353.85, 27,530.78 and 15,502.65

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Solution

The fourth proportional to 18,353.85, 27,530.78 and 15,502.65 is: 23,253.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,353.85 : 27,530.78 = 15,502.65 : x
  2. Step 2: Convert to fraction form
    18,353.85/27,530.78 = 15,502.65/x
  3. Step 3: Cross multiply
    18,353.85x = 27,530.78 × 15,502.65
  4. Step 4: Simplify right side
    18,353.85x = 426,799,969.05
  5. Step 5: Solve for x
    x = 426,799,969.05/18,353.85
  6. Step 6: Final answer
    x = 23,253.98

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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.