Home / 13,253.06-18,269.96-9,261.78

Finding the Fourth Proportional to 13,253.06, 18,269.96 and 9,261.78

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Solution

The fourth proportional to 13,253.06, 18,269.96 and 9,261.78 is: 12,767.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,253.06 : 18,269.96 = 9,261.78 : x
  2. Step 2: Convert to fraction form
    13,253.06/18,269.96 = 9,261.78/x
  3. Step 3: Cross multiply
    13,253.06x = 18,269.96 × 9,261.78
  4. Step 4: Simplify right side
    13,253.06x = 169,212,350.13
  5. Step 5: Solve for x
    x = 169,212,350.13/13,253.06
  6. Step 6: Final answer
    x = 12,767.79

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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.