Home / 15,491.25-21,377.34-8,417.52

Finding the Fourth Proportional to 15,491.25, 21,377.34 and 8,417.52

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Solution

The fourth proportional to 15,491.25, 21,377.34 and 8,417.52 is: 11,615.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,491.25 : 21,377.34 = 8,417.52 : x
  2. Step 2: Convert to fraction form
    15,491.25/21,377.34 = 8,417.52/x
  3. Step 3: Cross multiply
    15,491.25x = 21,377.34 × 8,417.52
  4. Step 4: Simplify right side
    15,491.25x = 179,944,187.00
  5. Step 5: Solve for x
    x = 179,944,187.00/15,491.25
  6. Step 6: Final answer
    x = 11,615.86

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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.