Home / 18,943.36-28,381.11-11,543.92

Finding the Fourth Proportional to 18,943.36, 28,381.11 and 11,543.92

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Solution

The fourth proportional to 18,943.36, 28,381.11 and 11,543.92 is: 17,295.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,943.36 : 28,381.11 = 11,543.92 : x
  2. Step 2: Convert to fraction form
    18,943.36/28,381.11 = 11,543.92/x
  3. Step 3: Cross multiply
    18,943.36x = 28,381.11 × 11,543.92
  4. Step 4: Simplify right side
    18,943.36x = 327,629,263.35
  5. Step 5: Solve for x
    x = 327,629,263.35/18,943.36
  6. Step 6: Final answer
    x = 17,295.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.