Home / 15,418.13-21,275.87-8,704.44

Finding the Fourth Proportional to 15,418.13, 21,275.87 and 8,704.44

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Solution

The fourth proportional to 15,418.13, 21,275.87 and 8,704.44 is: 12,011.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.13 : 21,275.87 = 8,704.44 : x
  2. Step 2: Convert to fraction form
    15,418.13/21,275.87 = 8,704.44/x
  3. Step 3: Cross multiply
    15,418.13x = 21,275.87 × 8,704.44
  4. Step 4: Simplify right side
    15,418.13x = 185,194,490.34
  5. Step 5: Solve for x
    x = 185,194,490.34/15,418.13
  6. Step 6: Final answer
    x = 12,011.48

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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.