Home / 28,187.88-38,882.16-18,627.86

Finding the Fourth Proportional to 28,187.88, 38,882.16 and 18,627.86

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Solution

The fourth proportional to 28,187.88, 38,882.16 and 18,627.86 is: 25,695.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.88 : 38,882.16 = 18,627.86 : x
  2. Step 2: Convert to fraction form
    28,187.88/38,882.16 = 18,627.86/x
  3. Step 3: Cross multiply
    28,187.88x = 38,882.16 × 18,627.86
  4. Step 4: Simplify right side
    28,187.88x = 724,291,432.98
  5. Step 5: Solve for x
    x = 724,291,432.98/28,187.88
  6. Step 6: Final answer
    x = 25,695.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.