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Finding the Fourth Proportional to 14,868.91, 20,518.91 and 8,154.52

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Solution

The fourth proportional to 14,868.91, 20,518.91 and 8,154.52 is: 11,253.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,868.91 : 20,518.91 = 8,154.52 : x
  2. Step 2: Convert to fraction form
    14,868.91/20,518.91 = 8,154.52/x
  3. Step 3: Cross multiply
    14,868.91x = 20,518.91 × 8,154.52
  4. Step 4: Simplify right side
    14,868.91x = 167,321,769.90
  5. Step 5: Solve for x
    x = 167,321,769.90/14,868.91
  6. Step 6: Final answer
    x = 11,253.13

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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.