Home / 14,981.60-20,678.72-8,696

Finding the Fourth Proportional to 14,981.60, 20,678.72 and 8,696

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Solution

The fourth proportional to 14,981.60, 20,678.72 and 8,696 is: 12,002.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,981.60 : 20,678.72 = 8,696 : x
  2. Step 2: Convert to fraction form
    14,981.60/20,678.72 = 8,696/x
  3. Step 3: Cross multiply
    14,981.60x = 20,678.72 × 8,696
  4. Step 4: Simplify right side
    14,981.60x = 179,822,149.12
  5. Step 5: Solve for x
    x = 179,822,149.12/14,981.60
  6. Step 6: Final answer
    x = 12,002.87

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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.