Home / 27,782.40-38,338.20-15,204.72

Finding the Fourth Proportional to 27,782.40, 38,338.20 and 15,204.72

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Solution

The fourth proportional to 27,782.40, 38,338.20 and 15,204.72 is: 20,981.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,782.40 : 38,338.20 = 15,204.72 : x
  2. Step 2: Convert to fraction form
    27,782.40/38,338.20 = 15,204.72/x
  3. Step 3: Cross multiply
    27,782.40x = 38,338.20 × 15,204.72
  4. Step 4: Simplify right side
    27,782.40x = 582,921,596.30
  5. Step 5: Solve for x
    x = 582,921,596.30/27,782.40
  6. Step 6: Final answer
    x = 20,981.69

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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.