Home / 27,758.28-38,306.48-15,821.72

Finding the Fourth Proportional to 27,758.28, 38,306.48 and 15,821.72

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Solution

The fourth proportional to 27,758.28, 38,306.48 and 15,821.72 is: 21,834.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,758.28 : 38,306.48 = 15,821.72 : x
  2. Step 2: Convert to fraction form
    27,758.28/38,306.48 = 15,821.72/x
  3. Step 3: Cross multiply
    27,758.28x = 38,306.48 × 15,821.72
  4. Step 4: Simplify right side
    27,758.28x = 606,074,400.75
  5. Step 5: Solve for x
    x = 606,074,400.75/27,758.28
  6. Step 6: Final answer
    x = 21,834.00

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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.