Home / 38,518.20-57,782.70-15,139.20

Finding the Fourth Proportional to 38,518.20, 57,782.70 and 15,139.20

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Solution

The fourth proportional to 38,518.20, 57,782.70 and 15,139.20 is: 22,710.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,518.20 : 57,782.70 = 15,139.20 : x
  2. Step 2: Convert to fraction form
    38,518.20/57,782.70 = 15,139.20/x
  3. Step 3: Cross multiply
    38,518.20x = 57,782.70 × 15,139.20
  4. Step 4: Simplify right side
    38,518.20x = 874,783,851.84
  5. Step 5: Solve for x
    x = 874,783,851.84/38,518.20
  6. Step 6: Final answer
    x = 22,710.92

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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.