Home / 12,220.52-18,330.74-8,315.24

Finding the Fourth Proportional to 12,220.52, 18,330.74 and 8,315.24

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Solution

The fourth proportional to 12,220.52, 18,330.74 and 8,315.24 is: 12,472.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220.52 : 18,330.74 = 8,315.24 : x
  2. Step 2: Convert to fraction form
    12,220.52/18,330.74 = 8,315.24/x
  3. Step 3: Cross multiply
    12,220.52x = 18,330.74 × 8,315.24
  4. Step 4: Simplify right side
    12,220.52x = 152,424,502.48
  5. Step 5: Solve for x
    x = 152,424,502.48/12,220.52
  6. Step 6: Final answer
    x = 12,472.83

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Double scale
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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.