Home / 10,081.78-15,122.67-4,888.42

Finding the Fourth Proportional to 10,081.78, 15,122.67 and 4,888.42

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Solution

The fourth proportional to 10,081.78, 15,122.67 and 4,888.42 is: 7,332.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,081.78 : 15,122.67 = 4,888.42 : x
  2. Step 2: Convert to fraction form
    10,081.78/15,122.67 = 4,888.42/x
  3. Step 3: Cross multiply
    10,081.78x = 15,122.67 × 4,888.42
  4. Step 4: Simplify right side
    10,081.78x = 73,925,962.48
  5. Step 5: Solve for x
    x = 73,925,962.48/10,081.78
  6. Step 6: Final answer
    x = 7,332.63

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.