Home / 27,909.85-38,515.67-15,162.92

Finding the Fourth Proportional to 27,909.85, 38,515.67 and 15,162.92

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Solution

The fourth proportional to 27,909.85, 38,515.67 and 15,162.92 is: 20,924.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,909.85 : 38,515.67 = 15,162.92 : x
  2. Step 2: Convert to fraction form
    27,909.85/38,515.67 = 15,162.92/x
  3. Step 3: Cross multiply
    27,909.85x = 38,515.67 × 15,162.92
  4. Step 4: Simplify right side
    27,909.85x = 584,010,043.43
  5. Step 5: Solve for x
    x = 584,010,043.43/27,909.85
  6. Step 6: Final answer
    x = 20,924.87

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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.