Home / 21,270.13-31,891.52-10,176.57

Finding the Fourth Proportional to 21,270.13, 31,891.52 and 10,176.57

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Solution

The fourth proportional to 21,270.13, 31,891.52 and 10,176.57 is: 15,258.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.13 : 31,891.52 = 10,176.57 : x
  2. Step 2: Convert to fraction form
    21,270.13/31,891.52 = 10,176.57/x
  3. Step 3: Cross multiply
    21,270.13x = 31,891.52 × 10,176.57
  4. Step 4: Simplify right side
    21,270.13x = 324,546,311.13
  5. Step 5: Solve for x
    x = 324,546,311.13/21,270.13
  6. Step 6: Final answer
    x = 15,258.32

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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.