Home / 39,818.66-54,951.20-21,915.02

Finding the Fourth Proportional to 39,818.66, 54,951.20 and 21,915.02

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Solution

The fourth proportional to 39,818.66, 54,951.20 and 21,915.02 is: 30,243.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,818.66 : 54,951.20 = 21,915.02 : x
  2. Step 2: Convert to fraction form
    39,818.66/54,951.20 = 21,915.02/x
  3. Step 3: Cross multiply
    39,818.66x = 54,951.20 × 21,915.02
  4. Step 4: Simplify right side
    39,818.66x = 1,204,256,647.02
  5. Step 5: Solve for x
    x = 1,204,256,647.02/39,818.66
  6. Step 6: Final answer
    x = 30,243.53

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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.