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Finding the Fourth Proportional to 21,751.36, 32,637.84 and 8,613.16

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Solution

The fourth proportional to 21,751.36, 32,637.84 and 8,613.16 is: 12,924.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.36 : 32,637.84 = 8,613.16 : x
  2. Step 2: Convert to fraction form
    21,751.36/32,637.84 = 8,613.16/x
  3. Step 3: Cross multiply
    21,751.36x = 32,637.84 × 8,613.16
  4. Step 4: Simplify right side
    21,751.36x = 281,114,937.97
  5. Step 5: Solve for x
    x = 281,114,937.97/21,751.36
  6. Step 6: Final answer
    x = 12,924.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.