Home / 12,472.16-17,217.18-8,225.72

Finding the Fourth Proportional to 12,472.16, 17,217.18 and 8,225.72

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Solution

The fourth proportional to 12,472.16, 17,217.18 and 8,225.72 is: 11,355.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.16 : 17,217.18 = 8,225.72 : x
  2. Step 2: Convert to fraction form
    12,472.16/17,217.18 = 8,225.72/x
  3. Step 3: Cross multiply
    12,472.16x = 17,217.18 × 8,225.72
  4. Step 4: Simplify right side
    12,472.16x = 141,623,701.87
  5. Step 5: Solve for x
    x = 141,623,701.87/12,472.16
  6. Step 6: Final answer
    x = 11,355.19

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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.