Home / 20,712.94-31,064.16-5,921.92

Finding the Fourth Proportional to 20,712.94, 31,064.16 and 5,921.92

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Solution

The fourth proportional to 20,712.94, 31,064.16 and 5,921.92 is: 8,881.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.94 : 31,064.16 = 5,921.92 : x
  2. Step 2: Convert to fraction form
    20,712.94/31,064.16 = 5,921.92/x
  3. Step 3: Cross multiply
    20,712.94x = 31,064.16 × 5,921.92
  4. Step 4: Simplify right side
    20,712.94x = 183,959,470.39
  5. Step 5: Solve for x
    x = 183,959,470.39/20,712.94
  6. Step 6: Final answer
    x = 8,881.38

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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.