Home / 27,778.53-38,335.29-15,203.28

Finding the Fourth Proportional to 27,778.53, 38,335.29 and 15,203.28

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Solution

The fourth proportional to 27,778.53, 38,335.29 and 15,203.28 is: 20,981.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,778.53 : 38,335.29 = 15,203.28 : x
  2. Step 2: Convert to fraction form
    27,778.53/38,335.29 = 15,203.28/x
  3. Step 3: Cross multiply
    27,778.53x = 38,335.29 × 15,203.28
  4. Step 4: Simplify right side
    27,778.53x = 582,822,320.01
  5. Step 5: Solve for x
    x = 582,822,320.01/27,778.53
  6. Step 6: Final answer
    x = 20,981.03

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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.