Home / 11,601.74-15,991.70-9,079.80

Finding the Fourth Proportional to 11,601.74, 15,991.70 and 9,079.80

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Solution

The fourth proportional to 11,601.74, 15,991.70 and 9,079.80 is: 12,515.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,601.74 : 15,991.70 = 9,079.80 : x
  2. Step 2: Convert to fraction form
    11,601.74/15,991.70 = 9,079.80/x
  3. Step 3: Cross multiply
    11,601.74x = 15,991.70 × 9,079.80
  4. Step 4: Simplify right side
    11,601.74x = 145,201,437.66
  5. Step 5: Solve for x
    x = 145,201,437.66/11,601.74
  6. Step 6: Final answer
    x = 12,515.49

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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.