Home / 15,564.67-21,479.31-8,491.24

Finding the Fourth Proportional to 15,564.67, 21,479.31 and 8,491.24

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Solution

The fourth proportional to 15,564.67, 21,479.31 and 8,491.24 is: 11,717.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,564.67 : 21,479.31 = 8,491.24 : x
  2. Step 2: Convert to fraction form
    15,564.67/21,479.31 = 8,491.24/x
  3. Step 3: Cross multiply
    15,564.67x = 21,479.31 × 8,491.24
  4. Step 4: Simplify right side
    15,564.67x = 182,385,976.24
  5. Step 5: Solve for x
    x = 182,385,976.24/15,564.67
  6. Step 6: Final answer
    x = 11,717.95

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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.