Home / 39,753.16-54,856.70-21,847.78

Finding the Fourth Proportional to 39,753.16, 54,856.70 and 21,847.78

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Solution

The fourth proportional to 39,753.16, 54,856.70 and 21,847.78 is: 30,148.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,753.16 : 54,856.70 = 21,847.78 : x
  2. Step 2: Convert to fraction form
    39,753.16/54,856.70 = 21,847.78/x
  3. Step 3: Cross multiply
    39,753.16x = 54,856.70 × 21,847.78
  4. Step 4: Simplify right side
    39,753.16x = 1,198,497,113.13
  5. Step 5: Solve for x
    x = 1,198,497,113.13/39,753.16
  6. Step 6: Final answer
    x = 30,148.47

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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.