Home / 27,753.89-38,301.33-15,815.30

Finding the Fourth Proportional to 27,753.89, 38,301.33 and 15,815.30

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Solution

The fourth proportional to 27,753.89, 38,301.33 and 15,815.30 is: 21,825.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,753.89 : 38,301.33 = 15,815.30 : x
  2. Step 2: Convert to fraction form
    27,753.89/38,301.33 = 15,815.30/x
  3. Step 3: Cross multiply
    27,753.89x = 38,301.33 × 15,815.30
  4. Step 4: Simplify right side
    27,753.89x = 605,746,832.84
  5. Step 5: Solve for x
    x = 605,746,832.84/27,753.89
  6. Step 6: Final answer
    x = 21,825.66

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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.