Home / 14,914.75-20,581.14-8,781.48

Finding the Fourth Proportional to 14,914.75, 20,581.14 and 8,781.48

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Solution

The fourth proportional to 14,914.75, 20,581.14 and 8,781.48 is: 12,117.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,914.75 : 20,581.14 = 8,781.48 : x
  2. Step 2: Convert to fraction form
    14,914.75/20,581.14 = 8,781.48/x
  3. Step 3: Cross multiply
    14,914.75x = 20,581.14 × 8,781.48
  4. Step 4: Simplify right side
    14,914.75x = 180,732,869.29
  5. Step 5: Solve for x
    x = 180,732,869.29/14,914.75
  6. Step 6: Final answer
    x = 12,117.73

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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.