Home / 27,987.02-38,620.86-15,240.23

Finding the Fourth Proportional to 27,987.02, 38,620.86 and 15,240.23

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Solution

The fourth proportional to 27,987.02, 38,620.86 and 15,240.23 is: 21,030.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.02 : 38,620.86 = 15,240.23 : x
  2. Step 2: Convert to fraction form
    27,987.02/38,620.86 = 15,240.23/x
  3. Step 3: Cross multiply
    27,987.02x = 38,620.86 × 15,240.23
  4. Step 4: Simplify right side
    27,987.02x = 588,590,789.20
  5. Step 5: Solve for x
    x = 588,590,789.20/27,987.02
  6. Step 6: Final answer
    x = 21,030.85

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Half scale
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Double scale
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Similar ratio
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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.