Home / 39,750.12-54,856.62-21,845.79

Finding the Fourth Proportional to 39,750.12, 54,856.62 and 21,845.79

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Solution

The fourth proportional to 39,750.12, 54,856.62 and 21,845.79 is: 30,147.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,750.12 : 54,856.62 = 21,845.79 : x
  2. Step 2: Convert to fraction form
    39,750.12/54,856.62 = 21,845.79/x
  3. Step 3: Cross multiply
    39,750.12x = 54,856.62 × 21,845.79
  4. Step 4: Simplify right side
    39,750.12x = 1,198,386,200.63
  5. Step 5: Solve for x
    x = 1,198,386,200.63/39,750.12
  6. Step 6: Final answer
    x = 30,147.99

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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.