Home / 39,380.52-54,348.34-22,390.09

Finding the Fourth Proportional to 39,380.52, 54,348.34 and 22,390.09

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Solution

The fourth proportional to 39,380.52, 54,348.34 and 22,390.09 is: 30,900.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,380.52 : 54,348.34 = 22,390.09 : x
  2. Step 2: Convert to fraction form
    39,380.52/54,348.34 = 22,390.09/x
  3. Step 3: Cross multiply
    39,380.52x = 54,348.34 × 22,390.09
  4. Step 4: Simplify right side
    39,380.52x = 1,216,864,366.34
  5. Step 5: Solve for x
    x = 1,216,864,366.34/39,380.52
  6. Step 6: Final answer
    x = 30,900.16

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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.