Home / 38,951.13-53,757.78-21,959.07

Finding the Fourth Proportional to 38,951.13, 53,757.78 and 21,959.07

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Solution

The fourth proportional to 38,951.13, 53,757.78 and 21,959.07 is: 30,306.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,951.13 : 53,757.78 = 21,959.07 : x
  2. Step 2: Convert to fraction form
    38,951.13/53,757.78 = 21,959.07/x
  3. Step 3: Cross multiply
    38,951.13x = 53,757.78 × 21,959.07
  4. Step 4: Simplify right side
    38,951.13x = 1,180,470,854.06
  5. Step 5: Solve for x
    x = 1,180,470,854.06/38,951.13
  6. Step 6: Final answer
    x = 30,306.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.