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Finding the Fourth Proportional to 21,876.68, 32,817.18 and 8,726.24

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Solution

The fourth proportional to 21,876.68, 32,817.18 and 8,726.24 is: 13,090.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,876.68 : 32,817.18 = 8,726.24 : x
  2. Step 2: Convert to fraction form
    21,876.68/32,817.18 = 8,726.24/x
  3. Step 3: Cross multiply
    21,876.68x = 32,817.18 × 8,726.24
  4. Step 4: Simplify right side
    21,876.68x = 286,370,588.80
  5. Step 5: Solve for x
    x = 286,370,588.80/21,876.68
  6. Step 6: Final answer
    x = 13,090.22

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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.