Home / 18,920.39-26,108.99-10,961.24

Finding the Fourth Proportional to 18,920.39, 26,108.99 and 10,961.24

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Solution

The fourth proportional to 18,920.39, 26,108.99 and 10,961.24 is: 15,125.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,920.39 : 26,108.99 = 10,961.24 : x
  2. Step 2: Convert to fraction form
    18,920.39/26,108.99 = 10,961.24/x
  3. Step 3: Cross multiply
    18,920.39x = 26,108.99 × 10,961.24
  4. Step 4: Simplify right side
    18,920.39x = 286,186,932.95
  5. Step 5: Solve for x
    x = 286,186,932.95/18,920.39
  6. Step 6: Final answer
    x = 15,125.85

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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.