Home / 18,981.12-26,191.95-11,021.79

Finding the Fourth Proportional to 18,981.12, 26,191.95 and 11,021.79

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Solution

The fourth proportional to 18,981.12, 26,191.95 and 11,021.79 is: 15,208.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981.12 : 26,191.95 = 11,021.79 : x
  2. Step 2: Convert to fraction form
    18,981.12/26,191.95 = 11,021.79/x
  3. Step 3: Cross multiply
    18,981.12x = 26,191.95 × 11,021.79
  4. Step 4: Simplify right side
    18,981.12x = 288,682,172.59
  5. Step 5: Solve for x
    x = 288,682,172.59/18,981.12
  6. Step 6: Final answer
    x = 15,208.91

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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.