Home / 27,615.12-38,108.90-15,039.88

Finding the Fourth Proportional to 27,615.12, 38,108.90 and 15,039.88

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Solution

The fourth proportional to 27,615.12, 38,108.90 and 15,039.88 is: 20,755.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,615.12 : 38,108.90 = 15,039.88 : x
  2. Step 2: Convert to fraction form
    27,615.12/38,108.90 = 15,039.88/x
  3. Step 3: Cross multiply
    27,615.12x = 38,108.90 × 15,039.88
  4. Step 4: Simplify right side
    27,615.12x = 573,153,282.93
  5. Step 5: Solve for x
    x = 573,153,282.93/27,615.12
  6. Step 6: Final answer
    x = 20,755.05

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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.