Home / 27,863.12-38,451-15,288.08

Finding the Fourth Proportional to 27,863.12, 38,451 and 15,288.08

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Solution

The fourth proportional to 27,863.12, 38,451 and 15,288.08 is: 21,097.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,863.12 : 38,451 = 15,288.08 : x
  2. Step 2: Convert to fraction form
    27,863.12/38,451 = 15,288.08/x
  3. Step 3: Cross multiply
    27,863.12x = 38,451 × 15,288.08
  4. Step 4: Simplify right side
    27,863.12x = 587,841,964.08
  5. Step 5: Solve for x
    x = 587,841,964.08/27,863.12
  6. Step 6: Final answer
    x = 21,097.49

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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.