Home / 15,965.22-22,031.46-8,891.28

Finding the Fourth Proportional to 15,965.22, 22,031.46 and 8,891.28

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Solution

The fourth proportional to 15,965.22, 22,031.46 and 8,891.28 is: 12,269.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,965.22 : 22,031.46 = 8,891.28 : x
  2. Step 2: Convert to fraction form
    15,965.22/22,031.46 = 8,891.28/x
  3. Step 3: Cross multiply
    15,965.22x = 22,031.46 × 8,891.28
  4. Step 4: Simplify right side
    15,965.22x = 195,887,879.67
  5. Step 5: Solve for x
    x = 195,887,879.67/15,965.22
  6. Step 6: Final answer
    x = 12,269.66

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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.