Home / 12,472.26-18,708.18-7,215.18

Finding the Fourth Proportional to 12,472.26, 18,708.18 and 7,215.18

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Solution

The fourth proportional to 12,472.26, 18,708.18 and 7,215.18 is: 10,822.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.26 : 18,708.18 = 7,215.18 : x
  2. Step 2: Convert to fraction form
    12,472.26/18,708.18 = 7,215.18/x
  3. Step 3: Cross multiply
    12,472.26x = 18,708.18 × 7,215.18
  4. Step 4: Simplify right side
    12,472.26x = 134,982,886.17
  5. Step 5: Solve for x
    x = 134,982,886.17/12,472.26
  6. Step 6: Final answer
    x = 10,822.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.