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Finding the Fourth Proportional to 21,751.11, 32,637.47 and 8,612.91

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Solution

The fourth proportional to 21,751.11, 32,637.47 and 8,612.91 is: 12,923.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.11 : 32,637.47 = 8,612.91 : x
  2. Step 2: Convert to fraction form
    21,751.11/32,637.47 = 8,612.91/x
  3. Step 3: Cross multiply
    21,751.11x = 32,637.47 × 8,612.91
  4. Step 4: Simplify right side
    21,751.11x = 281,103,548.67
  5. Step 5: Solve for x
    x = 281,103,548.67/21,751.11
  6. Step 6: Final answer
    x = 12,923.64

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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.