Home / 11,213.87-15,472.30-7,124.18

Finding the Fourth Proportional to 11,213.87, 15,472.30 and 7,124.18

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Solution

The fourth proportional to 11,213.87, 15,472.30 and 7,124.18 is: 9,829.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,213.87 : 15,472.30 = 7,124.18 : x
  2. Step 2: Convert to fraction form
    11,213.87/15,472.30 = 7,124.18/x
  3. Step 3: Cross multiply
    11,213.87x = 15,472.30 × 7,124.18
  4. Step 4: Simplify right side
    11,213.87x = 110,227,337.23
  5. Step 5: Solve for x
    x = 110,227,337.23/11,213.87
  6. Step 6: Final answer
    x = 9,829.56

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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.