Home / 14,420.92-19,900.20-8,451.76

Finding the Fourth Proportional to 14,420.92, 19,900.20 and 8,451.76

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Solution

The fourth proportional to 14,420.92, 19,900.20 and 8,451.76 is: 11,663.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,420.92 : 19,900.20 = 8,451.76 : x
  2. Step 2: Convert to fraction form
    14,420.92/19,900.20 = 8,451.76/x
  3. Step 3: Cross multiply
    14,420.92x = 19,900.20 × 8,451.76
  4. Step 4: Simplify right side
    14,420.92x = 168,191,714.35
  5. Step 5: Solve for x
    x = 168,191,714.35/14,420.92
  6. Step 6: Final answer
    x = 11,663.04

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Double scale
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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.