Home / 12,715.18-18,979.24-11,823.82

Finding the Fourth Proportional to 12,715.18, 18,979.24 and 11,823.82

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Solution

The fourth proportional to 12,715.18, 18,979.24 and 11,823.82 is: 17,648.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,715.18 : 18,979.24 = 11,823.82 : x
  2. Step 2: Convert to fraction form
    12,715.18/18,979.24 = 11,823.82/x
  3. Step 3: Cross multiply
    12,715.18x = 18,979.24 × 11,823.82
  4. Step 4: Simplify right side
    12,715.18x = 224,407,117.50
  5. Step 5: Solve for x
    x = 224,407,117.50/12,715.18
  6. Step 6: Final answer
    x = 17,648.76

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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.