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Finding the Fourth Proportional to 21,877.08, 32,822.82 and 8,722.20

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Solution

The fourth proportional to 21,877.08, 32,822.82 and 8,722.20 is: 13,086.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,877.08 : 32,822.82 = 8,722.20 : x
  2. Step 2: Convert to fraction form
    21,877.08/32,822.82 = 8,722.20/x
  3. Step 3: Cross multiply
    21,877.08x = 32,822.82 × 8,722.20
  4. Step 4: Simplify right side
    21,877.08x = 286,287,200.60
  5. Step 5: Solve for x
    x = 286,287,200.60/21,877.08
  6. Step 6: Final answer
    x = 13,086.17

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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.