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Finding the Fourth Proportional to 11,427, 15,758.46 and 7,451.16

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Solution

The fourth proportional to 11,427, 15,758.46 and 7,451.16 is: 10,275.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,427 : 15,758.46 = 7,451.16 : x
  2. Step 2: Convert to fraction form
    11,427/15,758.46 = 7,451.16/x
  3. Step 3: Cross multiply
    11,427x = 15,758.46 × 7,451.16
  4. Step 4: Simplify right side
    11,427x = 117,418,806.81
  5. Step 5: Solve for x
    x = 117,418,806.81/11,427
  6. Step 6: Final answer
    x = 10,275.56

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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.