Home / 27,815.60-38,377.04-15,878.24

Finding the Fourth Proportional to 27,815.60, 38,377.04 and 15,878.24

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Solution

The fourth proportional to 27,815.60, 38,377.04 and 15,878.24 is: 21,907.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.60 : 38,377.04 = 15,878.24 : x
  2. Step 2: Convert to fraction form
    27,815.60/38,377.04 = 15,878.24/x
  3. Step 3: Cross multiply
    27,815.60x = 38,377.04 × 15,878.24
  4. Step 4: Simplify right side
    27,815.60x = 609,359,851.61
  5. Step 5: Solve for x
    x = 609,359,851.61/27,815.60
  6. Step 6: Final answer
    x = 21,907.13

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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.