Home / 27,707.40-38,235.78-15,131.88

Finding the Fourth Proportional to 27,707.40, 38,235.78 and 15,131.88

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Solution

The fourth proportional to 27,707.40, 38,235.78 and 15,131.88 is: 20,881.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,707.40 : 38,235.78 = 15,131.88 : x
  2. Step 2: Convert to fraction form
    27,707.40/38,235.78 = 15,131.88/x
  3. Step 3: Cross multiply
    27,707.40x = 38,235.78 × 15,131.88
  4. Step 4: Simplify right side
    27,707.40x = 578,579,234.67
  5. Step 5: Solve for x
    x = 578,579,234.67/27,707.40
  6. Step 6: Final answer
    x = 20,881.76

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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.