Home / 15,955.38-22,015.80-8,881.65

Finding the Fourth Proportional to 15,955.38, 22,015.80 and 8,881.65

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Solution

The fourth proportional to 15,955.38, 22,015.80 and 8,881.65 is: 12,255.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,955.38 : 22,015.80 = 8,881.65 : x
  2. Step 2: Convert to fraction form
    15,955.38/22,015.80 = 8,881.65/x
  3. Step 3: Cross multiply
    15,955.38x = 22,015.80 × 8,881.65
  4. Step 4: Simplify right side
    15,955.38x = 195,536,630.07
  5. Step 5: Solve for x
    x = 195,536,630.07/15,955.38
  6. Step 6: Final answer
    x = 12,255.22

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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.