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Finding the Fourth Proportional to 21,959.18, 32,938.63 and 7,168.10

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Solution

The fourth proportional to 21,959.18, 32,938.63 and 7,168.10 is: 10,752.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.18 : 32,938.63 = 7,168.10 : x
  2. Step 2: Convert to fraction form
    21,959.18/32,938.63 = 7,168.10/x
  3. Step 3: Cross multiply
    21,959.18x = 32,938.63 × 7,168.10
  4. Step 4: Simplify right side
    21,959.18x = 236,107,458.13
  5. Step 5: Solve for x
    x = 236,107,458.13/21,959.18
  6. Step 6: Final answer
    x = 10,752.11

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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.