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Finding the Fourth Proportional to 18,829.44, 28,225.80 and 8,966.08

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Solution

The fourth proportional to 18,829.44, 28,225.80 and 8,966.08 is: 13,440.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,829.44 : 28,225.80 = 8,966.08 : x
  2. Step 2: Convert to fraction form
    18,829.44/28,225.80 = 8,966.08/x
  3. Step 3: Cross multiply
    18,829.44x = 28,225.80 × 8,966.08
  4. Step 4: Simplify right side
    18,829.44x = 253,074,780.86
  5. Step 5: Solve for x
    x = 253,074,780.86/18,829.44
  6. Step 6: Final answer
    x = 13,440.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.