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Finding the Fourth Proportional to 21,926.84, 32,887.41 and 8,779.34

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Solution

The fourth proportional to 21,926.84, 32,887.41 and 8,779.34 is: 13,167.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,926.84 : 32,887.41 = 8,779.34 : x
  2. Step 2: Convert to fraction form
    21,926.84/32,887.41 = 8,779.34/x
  3. Step 3: Cross multiply
    21,926.84x = 32,887.41 × 8,779.34
  4. Step 4: Simplify right side
    21,926.84x = 288,729,754.11
  5. Step 5: Solve for x
    x = 288,729,754.11/21,926.84
  6. Step 6: Final answer
    x = 13,167.87

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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.