Home / 19,482.21-26,879.15-11,920.66

Finding the Fourth Proportional to 19,482.21, 26,879.15 and 11,920.66

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Solution

The fourth proportional to 19,482.21, 26,879.15 and 11,920.66 is: 16,446.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,482.21 : 26,879.15 = 11,920.66 : x
  2. Step 2: Convert to fraction form
    19,482.21/26,879.15 = 11,920.66/x
  3. Step 3: Cross multiply
    19,482.21x = 26,879.15 × 11,920.66
  4. Step 4: Simplify right side
    19,482.21x = 320,417,170.84
  5. Step 5: Solve for x
    x = 320,417,170.84/19,482.21
  6. Step 6: Final answer
    x = 16,446.65

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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.