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Finding the Fourth Proportional to 14,663.60, 20,235.88 and 8,289.88

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Solution

The fourth proportional to 14,663.60, 20,235.88 and 8,289.88 is: 11,440.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,663.60 : 20,235.88 = 8,289.88 : x
  2. Step 2: Convert to fraction form
    14,663.60/20,235.88 = 8,289.88/x
  3. Step 3: Cross multiply
    14,663.60x = 20,235.88 × 8,289.88
  4. Step 4: Simplify right side
    14,663.60x = 167,753,016.89
  5. Step 5: Solve for x
    x = 167,753,016.89/14,663.60
  6. Step 6: Final answer
    x = 11,440.10

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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.