Home / 27,695.52-38,220.12-15,121.08

Finding the Fourth Proportional to 27,695.52, 38,220.12 and 15,121.08

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Solution

The fourth proportional to 27,695.52, 38,220.12 and 15,121.08 is: 20,867.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,695.52 : 38,220.12 = 15,121.08 : x
  2. Step 2: Convert to fraction form
    27,695.52/38,220.12 = 15,121.08/x
  3. Step 3: Cross multiply
    27,695.52x = 38,220.12 × 15,121.08
  4. Step 4: Simplify right side
    27,695.52x = 577,929,492.13
  5. Step 5: Solve for x
    x = 577,929,492.13/27,695.52
  6. Step 6: Final answer
    x = 20,867.26

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Half scale
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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.