Home / 11,678.32-16,116.08-7,486.57

Finding the Fourth Proportional to 11,678.32, 16,116.08 and 7,486.57

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Solution

The fourth proportional to 11,678.32, 16,116.08 and 7,486.57 is: 10,331.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678.32 : 16,116.08 = 7,486.57 : x
  2. Step 2: Convert to fraction form
    11,678.32/16,116.08 = 7,486.57/x
  3. Step 3: Cross multiply
    11,678.32x = 16,116.08 × 7,486.57
  4. Step 4: Simplify right side
    11,678.32x = 120,654,161.05
  5. Step 5: Solve for x
    x = 120,654,161.05/11,678.32
  6. Step 6: Final answer
    x = 10,331.47

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Double scale
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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.