Home / 27,385.20-41,077.80-15,721.20

Finding the Fourth Proportional to 27,385.20, 41,077.80 and 15,721.20

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Solution

The fourth proportional to 27,385.20, 41,077.80 and 15,721.20 is: 23,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,385.20 : 41,077.80 = 15,721.20 : x
  2. Step 2: Convert to fraction form
    27,385.20/41,077.80 = 15,721.20/x
  3. Step 3: Cross multiply
    27,385.20x = 41,077.80 × 15,721.20
  4. Step 4: Simplify right side
    27,385.20x = 645,792,309.36
  5. Step 5: Solve for x
    x = 645,792,309.36/27,385.20
  6. Step 6: Final answer
    x = 23,581.80

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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.