Home / 27,778.55-38,335.07-15,203.30

Finding the Fourth Proportional to 27,778.55, 38,335.07 and 15,203.30

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Solution

The fourth proportional to 27,778.55, 38,335.07 and 15,203.30 is: 20,980.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,778.55 : 38,335.07 = 15,203.30 : x
  2. Step 2: Convert to fraction form
    27,778.55/38,335.07 = 15,203.30/x
  3. Step 3: Cross multiply
    27,778.55x = 38,335.07 × 15,203.30
  4. Step 4: Simplify right side
    27,778.55x = 582,819,416.06
  5. Step 5: Solve for x
    x = 582,819,416.06/27,778.55
  6. Step 6: Final answer
    x = 20,980.92

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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.