Home / 27,960.25-38,585.15-15,385

Finding the Fourth Proportional to 27,960.25, 38,585.15 and 15,385

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Solution

The fourth proportional to 27,960.25, 38,585.15 and 15,385 is: 21,231.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,960.25 : 38,585.15 = 15,385 : x
  2. Step 2: Convert to fraction form
    27,960.25/38,585.15 = 15,385/x
  3. Step 3: Cross multiply
    27,960.25x = 38,585.15 × 15,385
  4. Step 4: Simplify right side
    27,960.25x = 593,632,532.75
  5. Step 5: Solve for x
    x = 593,632,532.75/27,960.25
  6. Step 6: Final answer
    x = 21,231.30

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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.