Home / 27,764.03-38,315.27-15,188.78

Finding the Fourth Proportional to 27,764.03, 38,315.27 and 15,188.78

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Solution

The fourth proportional to 27,764.03, 38,315.27 and 15,188.78 is: 20,961.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,764.03 : 38,315.27 = 15,188.78 : x
  2. Step 2: Convert to fraction form
    27,764.03/38,315.27 = 15,188.78/x
  3. Step 3: Cross multiply
    27,764.03x = 38,315.27 × 15,188.78
  4. Step 4: Simplify right side
    27,764.03x = 581,962,340.43
  5. Step 5: Solve for x
    x = 581,962,340.43/27,764.03
  6. Step 6: Final answer
    x = 20,961.02

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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.