Home / 15,339.32-21,167.76-8,624.78

Finding the Fourth Proportional to 15,339.32, 21,167.76 and 8,624.78

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Solution

The fourth proportional to 15,339.32, 21,167.76 and 8,624.78 is: 11,901.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,339.32 : 21,167.76 = 8,624.78 : x
  2. Step 2: Convert to fraction form
    15,339.32/21,167.76 = 8,624.78/x
  3. Step 3: Cross multiply
    15,339.32x = 21,167.76 × 8,624.78
  4. Step 4: Simplify right side
    15,339.32x = 182,567,273.09
  5. Step 5: Solve for x
    x = 182,567,273.09/15,339.32
  6. Step 6: Final answer
    x = 11,901.91

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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.