Home / 39,818.46-54,949.49-21,913.47

Finding the Fourth Proportional to 39,818.46, 54,949.49 and 21,913.47

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Solution

The fourth proportional to 39,818.46, 54,949.49 and 21,913.47 is: 30,240.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,818.46 : 54,949.49 = 21,913.47 : x
  2. Step 2: Convert to fraction form
    39,818.46/54,949.49 = 21,913.47/x
  3. Step 3: Cross multiply
    39,818.46x = 54,949.49 × 21,913.47
  4. Step 4: Simplify right side
    39,818.46x = 1,204,134,000.63
  5. Step 5: Solve for x
    x = 1,204,134,000.63/39,818.46
  6. Step 6: Final answer
    x = 30,240.60

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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.