Home / 15,348.39-21,180.78-9,060.75

Finding the Fourth Proportional to 15,348.39, 21,180.78 and 9,060.75

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Solution

The fourth proportional to 15,348.39, 21,180.78 and 9,060.75 is: 12,503.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.39 : 21,180.78 = 9,060.75 : x
  2. Step 2: Convert to fraction form
    15,348.39/21,180.78 = 9,060.75/x
  3. Step 3: Cross multiply
    15,348.39x = 21,180.78 × 9,060.75
  4. Step 4: Simplify right side
    15,348.39x = 191,913,752.39
  5. Step 5: Solve for x
    x = 191,913,752.39/15,348.39
  6. Step 6: Final answer
    x = 12,503.84

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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.