Home / 27,782.64-38,340.30-15,207.66

Finding the Fourth Proportional to 27,782.64, 38,340.30 and 15,207.66

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Solution

The fourth proportional to 27,782.64, 38,340.30 and 15,207.66 is: 20,986.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,782.64 : 38,340.30 = 15,207.66 : x
  2. Step 2: Convert to fraction form
    27,782.64/38,340.30 = 15,207.66/x
  3. Step 3: Cross multiply
    27,782.64x = 38,340.30 × 15,207.66
  4. Step 4: Simplify right side
    27,782.64x = 583,066,246.70
  5. Step 5: Solve for x
    x = 583,066,246.70/27,782.64
  6. Step 6: Final answer
    x = 20,986.71

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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.