Home / 27,731.52-38,259-18,303.12

Finding the Fourth Proportional to 27,731.52, 38,259 and 18,303.12

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Solution

The fourth proportional to 27,731.52, 38,259 and 18,303.12 is: 25,251.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,731.52 : 38,259 = 18,303.12 : x
  2. Step 2: Convert to fraction form
    27,731.52/38,259 = 18,303.12/x
  3. Step 3: Cross multiply
    27,731.52x = 38,259 × 18,303.12
  4. Step 4: Simplify right side
    27,731.52x = 700,259,068.08
  5. Step 5: Solve for x
    x = 700,259,068.08/27,731.52
  6. Step 6: Final answer
    x = 25,251.38

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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.