Home / 15,091.04-20,811.12-11,729

Finding the Fourth Proportional to 15,091.04, 20,811.12 and 11,729

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Solution

The fourth proportional to 15,091.04, 20,811.12 and 11,729 is: 16,174.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,091.04 : 20,811.12 = 11,729 : x
  2. Step 2: Convert to fraction form
    15,091.04/20,811.12 = 11,729/x
  3. Step 3: Cross multiply
    15,091.04x = 20,811.12 × 11,729
  4. Step 4: Simplify right side
    15,091.04x = 244,093,626.48
  5. Step 5: Solve for x
    x = 244,093,626.48/15,091.04
  6. Step 6: Final answer
    x = 16,174.74

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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.