Home / 21,176.19-31,759.20-7,132.59

Finding the Fourth Proportional to 21,176.19, 31,759.20 and 7,132.59

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Solution

The fourth proportional to 21,176.19, 31,759.20 and 7,132.59 is: 10,697.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.19 : 31,759.20 = 7,132.59 : x
  2. Step 2: Convert to fraction form
    21,176.19/31,759.20 = 7,132.59/x
  3. Step 3: Cross multiply
    21,176.19x = 31,759.20 × 7,132.59
  4. Step 4: Simplify right side
    21,176.19x = 226,525,352.33
  5. Step 5: Solve for x
    x = 226,525,352.33/21,176.19
  6. Step 6: Final answer
    x = 10,697.17

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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.