Home / 13,610.91-18,778.21-8,897.92

Finding the Fourth Proportional to 13,610.91, 18,778.21 and 8,897.92

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Solution

The fourth proportional to 13,610.91, 18,778.21 and 8,897.92 is: 12,275.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.91 : 18,778.21 = 8,897.92 : x
  2. Step 2: Convert to fraction form
    13,610.91/18,778.21 = 8,897.92/x
  3. Step 3: Cross multiply
    13,610.91x = 18,778.21 × 8,897.92
  4. Step 4: Simplify right side
    13,610.91x = 167,087,010.32
  5. Step 5: Solve for x
    x = 167,087,010.32/13,610.91
  6. Step 6: Final answer
    x = 12,275.96

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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.