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Finding the Fourth Proportional to 21,881.27, 32,820.30 and 8,551.76

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Solution

The fourth proportional to 21,881.27, 32,820.30 and 8,551.76 is: 12,827.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,881.27 : 32,820.30 = 8,551.76 : x
  2. Step 2: Convert to fraction form
    21,881.27/32,820.30 = 8,551.76/x
  3. Step 3: Cross multiply
    21,881.27x = 32,820.30 × 8,551.76
  4. Step 4: Simplify right side
    21,881.27x = 280,671,164.63
  5. Step 5: Solve for x
    x = 280,671,164.63/21,881.27
  6. Step 6: Final answer
    x = 12,827.01

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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.