Home / 11,315.22-15,613.46-6,279.18

Finding the Fourth Proportional to 11,315.22, 15,613.46 and 6,279.18

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Solution

The fourth proportional to 11,315.22, 15,613.46 and 6,279.18 is: 8,664.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.22 : 15,613.46 = 6,279.18 : x
  2. Step 2: Convert to fraction form
    11,315.22/15,613.46 = 6,279.18/x
  3. Step 3: Cross multiply
    11,315.22x = 15,613.46 × 6,279.18
  4. Step 4: Simplify right side
    11,315.22x = 98,039,725.76
  5. Step 5: Solve for x
    x = 98,039,725.76/11,315.22
  6. Step 6: Final answer
    x = 8,664.41

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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.