Home / 12,071.85-18,107.78-10,612.65

Finding the Fourth Proportional to 12,071.85, 18,107.78 and 10,612.65

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Solution

The fourth proportional to 12,071.85, 18,107.78 and 10,612.65 is: 15,918.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,071.85 : 18,107.78 = 10,612.65 : x
  2. Step 2: Convert to fraction form
    12,071.85/18,107.78 = 10,612.65/x
  3. Step 3: Cross multiply
    12,071.85x = 18,107.78 × 10,612.65
  4. Step 4: Simplify right side
    12,071.85x = 192,171,478.35
  5. Step 5: Solve for x
    x = 192,171,478.35/12,071.85
  6. Step 6: Final answer
    x = 15,918.98

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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.