Home / 27,778.78-38,334.48-15,203.50

Finding the Fourth Proportional to 27,778.78, 38,334.48 and 15,203.50

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Solution

The fourth proportional to 27,778.78, 38,334.48 and 15,203.50 is: 20,980.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,778.78 : 38,334.48 = 15,203.50 : x
  2. Step 2: Convert to fraction form
    27,778.78/38,334.48 = 15,203.50/x
  3. Step 3: Cross multiply
    27,778.78x = 38,334.48 × 15,203.50
  4. Step 4: Simplify right side
    27,778.78x = 582,818,266.68
  5. Step 5: Solve for x
    x = 582,818,266.68/27,778.78
  6. Step 6: Final answer
    x = 20,980.70

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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.