Home / 39,378.02-54,339.70-22,380.02

Finding the Fourth Proportional to 39,378.02, 54,339.70 and 22,380.02

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Solution

The fourth proportional to 39,378.02, 54,339.70 and 22,380.02 is: 30,883.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,378.02 : 54,339.70 = 22,380.02 : x
  2. Step 2: Convert to fraction form
    39,378.02/54,339.70 = 22,380.02/x
  3. Step 3: Cross multiply
    39,378.02x = 54,339.70 × 22,380.02
  4. Step 4: Simplify right side
    39,378.02x = 1,216,123,392.97
  5. Step 5: Solve for x
    x = 1,216,123,392.97/39,378.02
  6. Step 6: Final answer
    x = 30,883.30

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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.