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Finding the Fourth Proportional to 14,891.95, 20,549.61 and 8,177.50

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Solution

The fourth proportional to 14,891.95, 20,549.61 and 8,177.50 is: 11,284.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,891.95 : 20,549.61 = 8,177.50 : x
  2. Step 2: Convert to fraction form
    14,891.95/20,549.61 = 8,177.50/x
  3. Step 3: Cross multiply
    14,891.95x = 20,549.61 × 8,177.50
  4. Step 4: Simplify right side
    14,891.95x = 168,044,435.78
  5. Step 5: Solve for x
    x = 168,044,435.78/14,891.95
  6. Step 6: Final answer
    x = 11,284.25

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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.