Home / 38,385.18-57,578.04-13,425.12

Finding the Fourth Proportional to 38,385.18, 57,578.04 and 13,425.12

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Solution

The fourth proportional to 38,385.18, 57,578.04 and 13,425.12 is: 20,137.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,385.18 : 57,578.04 = 13,425.12 : x
  2. Step 2: Convert to fraction form
    38,385.18/57,578.04 = 13,425.12/x
  3. Step 3: Cross multiply
    38,385.18x = 57,578.04 × 13,425.12
  4. Step 4: Simplify right side
    38,385.18x = 772,992,096.36
  5. Step 5: Solve for x
    x = 772,992,096.36/38,385.18
  6. Step 6: Final answer
    x = 20,137.77

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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.