Home / 14,446.20-19,921.54-8,781.72

Finding the Fourth Proportional to 14,446.20, 19,921.54 and 8,781.72

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Solution

The fourth proportional to 14,446.20, 19,921.54 and 8,781.72 is: 12,110.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,446.20 : 19,921.54 = 8,781.72 : x
  2. Step 2: Convert to fraction form
    14,446.20/19,921.54 = 8,781.72/x
  3. Step 3: Cross multiply
    14,446.20x = 19,921.54 × 8,781.72
  4. Step 4: Simplify right side
    14,446.20x = 174,945,386.25
  5. Step 5: Solve for x
    x = 174,945,386.25/14,446.20
  6. Step 6: Final answer
    x = 12,110.13

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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.