Home / 14,839.50-20,478.56-8,125.19

Finding the Fourth Proportional to 14,839.50, 20,478.56 and 8,125.19

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Solution

The fourth proportional to 14,839.50, 20,478.56 and 8,125.19 is: 11,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,839.50 : 20,478.56 = 8,125.19 : x
  2. Step 2: Convert to fraction form
    14,839.50/20,478.56 = 8,125.19/x
  3. Step 3: Cross multiply
    14,839.50x = 20,478.56 × 8,125.19
  4. Step 4: Simplify right side
    14,839.50x = 166,392,047.91
  5. Step 5: Solve for x
    x = 166,392,047.91/14,839.50
  6. Step 6: Final answer
    x = 11,212.78

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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.