Home / 11,507.12-17,182.68-9,140.56

Finding the Fourth Proportional to 11,507.12, 17,182.68 and 9,140.56

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Solution

The fourth proportional to 11,507.12, 17,182.68 and 9,140.56 is: 13,648.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,507.12 : 17,182.68 = 9,140.56 : x
  2. Step 2: Convert to fraction form
    11,507.12/17,182.68 = 9,140.56/x
  3. Step 3: Cross multiply
    11,507.12x = 17,182.68 × 9,140.56
  4. Step 4: Simplify right side
    11,507.12x = 157,059,317.50
  5. Step 5: Solve for x
    x = 157,059,317.50/11,507.12
  6. Step 6: Final answer
    x = 13,648.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.