Home / 11,132.79-15,379.02-9,738.57

Finding the Fourth Proportional to 11,132.79, 15,379.02 and 9,738.57

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Solution

The fourth proportional to 11,132.79, 15,379.02 and 9,738.57 is: 13,453.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,132.79 : 15,379.02 = 9,738.57 : x
  2. Step 2: Convert to fraction form
    11,132.79/15,379.02 = 9,738.57/x
  3. Step 3: Cross multiply
    11,132.79x = 15,379.02 × 9,738.57
  4. Step 4: Simplify right side
    11,132.79x = 149,769,662.80
  5. Step 5: Solve for x
    x = 149,769,662.80/11,132.79
  6. Step 6: Final answer
    x = 13,453.02

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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.