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Finding the Fourth Proportional to 14,649.76, 20,217.04 and 8,987.62

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Solution

The fourth proportional to 14,649.76, 20,217.04 and 8,987.62 is: 12,403.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,649.76 : 20,217.04 = 8,987.62 : x
  2. Step 2: Convert to fraction form
    14,649.76/20,217.04 = 8,987.62/x
  3. Step 3: Cross multiply
    14,649.76x = 20,217.04 × 8,987.62
  4. Step 4: Simplify right side
    14,649.76x = 181,703,073.04
  5. Step 5: Solve for x
    x = 181,703,073.04/14,649.76
  6. Step 6: Final answer
    x = 12,403.14

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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.