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Finding the Fourth Proportional to 21,959.96, 32,957.08 and 8,820.94

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Solution

The fourth proportional to 21,959.96, 32,957.08 and 8,820.94 is: 13,238.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.96 : 32,957.08 = 8,820.94 : x
  2. Step 2: Convert to fraction form
    21,959.96/32,957.08 = 8,820.94/x
  3. Step 3: Cross multiply
    21,959.96x = 32,957.08 × 8,820.94
  4. Step 4: Simplify right side
    21,959.96x = 290,712,425.26
  5. Step 5: Solve for x
    x = 290,712,425.26/21,959.96
  6. Step 6: Final answer
    x = 13,238.29

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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.