Home / 15,680.22-21,637.35-8,963.70

Finding the Fourth Proportional to 15,680.22, 21,637.35 and 8,963.70

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Solution

The fourth proportional to 15,680.22, 21,637.35 and 8,963.70 is: 12,369.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,680.22 : 21,637.35 = 8,963.70 : x
  2. Step 2: Convert to fraction form
    15,680.22/21,637.35 = 8,963.70/x
  3. Step 3: Cross multiply
    15,680.22x = 21,637.35 × 8,963.70
  4. Step 4: Simplify right side
    15,680.22x = 193,950,714.20
  5. Step 5: Solve for x
    x = 193,950,714.20/15,680.22
  6. Step 6: Final answer
    x = 12,369.13

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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.