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Finding the Fourth Proportional to 11,313.54, 15,613.04 and 6,278.13

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Solution

The fourth proportional to 11,313.54, 15,613.04 and 6,278.13 is: 8,664.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,313.54 : 15,613.04 = 6,278.13 : x
  2. Step 2: Convert to fraction form
    11,313.54/15,613.04 = 6,278.13/x
  3. Step 3: Cross multiply
    11,313.54x = 15,613.04 × 6,278.13
  4. Step 4: Simplify right side
    11,313.54x = 98,020,694.82
  5. Step 5: Solve for x
    x = 98,020,694.82/11,313.54
  6. Step 6: Final answer
    x = 8,664.02

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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.