Home / 39,756.72-54,863.16-21,851.76

Finding the Fourth Proportional to 39,756.72, 54,863.16 and 21,851.76

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Solution

The fourth proportional to 39,756.72, 54,863.16 and 21,851.76 is: 30,154.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.72 : 54,863.16 = 21,851.76 : x
  2. Step 2: Convert to fraction form
    39,756.72/54,863.16 = 21,851.76/x
  3. Step 3: Cross multiply
    39,756.72x = 54,863.16 × 21,851.76
  4. Step 4: Simplify right side
    39,756.72x = 1,198,856,605.16
  5. Step 5: Solve for x
    x = 1,198,856,605.16/39,756.72
  6. Step 6: Final answer
    x = 30,154.82

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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.