Home / 11,291.73-15,585.18-7,515.06

Finding the Fourth Proportional to 11,291.73, 15,585.18 and 7,515.06

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Solution

The fourth proportional to 11,291.73, 15,585.18 and 7,515.06 is: 10,372.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,291.73 : 15,585.18 = 7,515.06 : x
  2. Step 2: Convert to fraction form
    11,291.73/15,585.18 = 7,515.06/x
  3. Step 3: Cross multiply
    11,291.73x = 15,585.18 × 7,515.06
  4. Step 4: Simplify right side
    11,291.73x = 117,123,562.81
  5. Step 5: Solve for x
    x = 117,123,562.81/11,291.73
  6. Step 6: Final answer
    x = 10,372.51

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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.