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Finding the Fourth Proportional to 14,869.22, 20,519.78 and 8,154.79

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Solution

The fourth proportional to 14,869.22, 20,519.78 and 8,154.79 is: 11,253.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,869.22 : 20,519.78 = 8,154.79 : x
  2. Step 2: Convert to fraction form
    14,869.22/20,519.78 = 8,154.79/x
  3. Step 3: Cross multiply
    14,869.22x = 20,519.78 × 8,154.79
  4. Step 4: Simplify right side
    14,869.22x = 167,334,440.18
  5. Step 5: Solve for x
    x = 167,334,440.18/14,869.22
  6. Step 6: Final answer
    x = 11,253.75

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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.