Home / 15,514.38-21,400.25-13,529.70

Finding the Fourth Proportional to 15,514.38, 21,400.25 and 13,529.70

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Solution

The fourth proportional to 15,514.38, 21,400.25 and 13,529.70 is: 18,662.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,514.38 : 21,400.25 = 13,529.70 : x
  2. Step 2: Convert to fraction form
    15,514.38/21,400.25 = 13,529.70/x
  3. Step 3: Cross multiply
    15,514.38x = 21,400.25 × 13,529.70
  4. Step 4: Simplify right side
    15,514.38x = 289,538,894.78
  5. Step 5: Solve for x
    x = 289,538,894.78/15,514.38
  6. Step 6: Final answer
    x = 18,662.61

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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.