Home / 27,805.28-38,367.59-15,867.90

Finding the Fourth Proportional to 27,805.28, 38,367.59 and 15,867.90

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Solution

The fourth proportional to 27,805.28, 38,367.59 and 15,867.90 is: 21,895.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,805.28 : 38,367.59 = 15,867.90 : x
  2. Step 2: Convert to fraction form
    27,805.28/38,367.59 = 15,867.90/x
  3. Step 3: Cross multiply
    27,805.28x = 38,367.59 × 15,867.90
  4. Step 4: Simplify right side
    27,805.28x = 608,813,002.02
  5. Step 5: Solve for x
    x = 608,813,002.02/27,805.28
  6. Step 6: Final answer
    x = 21,895.59

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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.