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Finding the Fourth Proportional to 21,951, 32,910.03 and 7,151.13

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Solution

The fourth proportional to 21,951, 32,910.03 and 7,151.13 is: 10,721.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951 : 32,910.03 = 7,151.13 : x
  2. Step 2: Convert to fraction form
    21,951/32,910.03 = 7,151.13/x
  3. Step 3: Cross multiply
    21,951x = 32,910.03 × 7,151.13
  4. Step 4: Simplify right side
    21,951x = 235,343,902.83
  5. Step 5: Solve for x
    x = 235,343,902.83/21,951
  6. Step 6: Final answer
    x = 10,721.33

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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.