Home / 38,139.40-57,219.90-11,846.80

Finding the Fourth Proportional to 38,139.40, 57,219.90 and 11,846.80

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Solution

The fourth proportional to 38,139.40, 57,219.90 and 11,846.80 is: 17,773.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,139.40 : 57,219.90 = 11,846.80 : x
  2. Step 2: Convert to fraction form
    38,139.40/57,219.90 = 11,846.80/x
  3. Step 3: Cross multiply
    38,139.40x = 57,219.90 × 11,846.80
  4. Step 4: Simplify right side
    38,139.40x = 677,872,711.32
  5. Step 5: Solve for x
    x = 677,872,711.32/38,139.40
  6. Step 6: Final answer
    x = 17,773.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.