Home / 27,821.64-38,397.54-15,882.28

Finding the Fourth Proportional to 27,821.64, 38,397.54 and 15,882.28

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Solution

The fourth proportional to 27,821.64, 38,397.54 and 15,882.28 is: 21,919.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,821.64 : 38,397.54 = 15,882.28 : x
  2. Step 2: Convert to fraction form
    27,821.64/38,397.54 = 15,882.28/x
  3. Step 3: Cross multiply
    27,821.64x = 38,397.54 × 15,882.28
  4. Step 4: Simplify right side
    27,821.64x = 609,840,481.59
  5. Step 5: Solve for x
    x = 609,840,481.59/27,821.64
  6. Step 6: Final answer
    x = 21,919.65

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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.