Home / 38,934.76-53,729.04-21,938.80

Finding the Fourth Proportional to 38,934.76, 53,729.04 and 21,938.80

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Solution

The fourth proportional to 38,934.76, 53,729.04 and 21,938.80 is: 30,275.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,934.76 : 53,729.04 = 21,938.80 : x
  2. Step 2: Convert to fraction form
    38,934.76/53,729.04 = 21,938.80/x
  3. Step 3: Cross multiply
    38,934.76x = 53,729.04 × 21,938.80
  4. Step 4: Simplify right side
    38,934.76x = 1,178,750,662.75
  5. Step 5: Solve for x
    x = 1,178,750,662.75/38,934.76
  6. Step 6: Final answer
    x = 30,275.02

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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.