Home / 20,921.33-31,382.26-6,130.55

Finding the Fourth Proportional to 20,921.33, 31,382.26 and 6,130.55

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Solution

The fourth proportional to 20,921.33, 31,382.26 and 6,130.55 is: 9,195.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,921.33 : 31,382.26 = 6,130.55 : x
  2. Step 2: Convert to fraction form
    20,921.33/31,382.26 = 6,130.55/x
  3. Step 3: Cross multiply
    20,921.33x = 31,382.26 × 6,130.55
  4. Step 4: Simplify right side
    20,921.33x = 192,390,577.17
  5. Step 5: Solve for x
    x = 192,390,577.17/20,921.33
  6. Step 6: Final answer
    x = 9,195.90

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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.