Home / 15,400.86-21,253.22-8,327.31

Finding the Fourth Proportional to 15,400.86, 21,253.22 and 8,327.31

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Solution

The fourth proportional to 15,400.86, 21,253.22 and 8,327.31 is: 11,491.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,400.86 : 21,253.22 = 8,327.31 : x
  2. Step 2: Convert to fraction form
    15,400.86/21,253.22 = 8,327.31/x
  3. Step 3: Cross multiply
    15,400.86x = 21,253.22 × 8,327.31
  4. Step 4: Simplify right side
    15,400.86x = 176,982,151.44
  5. Step 5: Solve for x
    x = 176,982,151.44/15,400.86
  6. Step 6: Final answer
    x = 11,491.71

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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.