Home / 11,316.42-15,614.78-6,279.84

Finding the Fourth Proportional to 11,316.42, 15,614.78 and 6,279.84

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Solution

The fourth proportional to 11,316.42, 15,614.78 and 6,279.84 is: 8,665.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,316.42 : 15,614.78 = 6,279.84 : x
  2. Step 2: Convert to fraction form
    11,316.42/15,614.78 = 6,279.84/x
  3. Step 3: Cross multiply
    11,316.42x = 15,614.78 × 6,279.84
  4. Step 4: Simplify right side
    11,316.42x = 98,058,288.64
  5. Step 5: Solve for x
    x = 98,058,288.64/11,316.42
  6. Step 6: Final answer
    x = 8,665.13

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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.