Home / 27,911.18-38,517.14-15,335.66

Finding the Fourth Proportional to 27,911.18, 38,517.14 and 15,335.66

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Solution

The fourth proportional to 27,911.18, 38,517.14 and 15,335.66 is: 21,163.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,911.18 : 38,517.14 = 15,335.66 : x
  2. Step 2: Convert to fraction form
    27,911.18/38,517.14 = 15,335.66/x
  3. Step 3: Cross multiply
    27,911.18x = 38,517.14 × 15,335.66
  4. Step 4: Simplify right side
    27,911.18x = 590,685,763.21
  5. Step 5: Solve for x
    x = 590,685,763.21/27,911.18
  6. Step 6: Final answer
    x = 21,163.05

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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.