Home / 18,301.76-27,438.82-9,988.86

Finding the Fourth Proportional to 18,301.76, 27,438.82 and 9,988.86

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Solution

The fourth proportional to 18,301.76, 27,438.82 and 9,988.86 is: 14,975.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,301.76 : 27,438.82 = 9,988.86 : x
  2. Step 2: Convert to fraction form
    18,301.76/27,438.82 = 9,988.86/x
  3. Step 3: Cross multiply
    18,301.76x = 27,438.82 × 9,988.86
  4. Step 4: Simplify right side
    18,301.76x = 274,082,531.55
  5. Step 5: Solve for x
    x = 274,082,531.55/18,301.76
  6. Step 6: Final answer
    x = 14,975.75

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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.