Home / 10,126.50-15,123.23-8,742.66

Finding the Fourth Proportional to 10,126.50, 15,123.23 and 8,742.66

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Solution

The fourth proportional to 10,126.50, 15,123.23 and 8,742.66 is: 13,056.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,126.50 : 15,123.23 = 8,742.66 : x
  2. Step 2: Convert to fraction form
    10,126.50/15,123.23 = 8,742.66/x
  3. Step 3: Cross multiply
    10,126.50x = 15,123.23 × 8,742.66
  4. Step 4: Simplify right side
    10,126.50x = 132,217,214.28
  5. Step 5: Solve for x
    x = 132,217,214.28/10,126.50
  6. Step 6: Final answer
    x = 13,056.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.