Home / 13,877.76-19,151.10-8,287.68

Finding the Fourth Proportional to 13,877.76, 19,151.10 and 8,287.68

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Solution

The fourth proportional to 13,877.76, 19,151.10 and 8,287.68 is: 11,436.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,877.76 : 19,151.10 = 8,287.68 : x
  2. Step 2: Convert to fraction form
    13,877.76/19,151.10 = 8,287.68/x
  3. Step 3: Cross multiply
    13,877.76x = 19,151.10 × 8,287.68
  4. Step 4: Simplify right side
    13,877.76x = 158,718,188.45
  5. Step 5: Solve for x
    x = 158,718,188.45/13,877.76
  6. Step 6: Final answer
    x = 11,436.87

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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.