Home / 20,774.95-31,162.47-11,560.39

Finding the Fourth Proportional to 20,774.95, 31,162.47 and 11,560.39

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Solution

The fourth proportional to 20,774.95, 31,162.47 and 11,560.39 is: 17,340.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.95 : 31,162.47 = 11,560.39 : x
  2. Step 2: Convert to fraction form
    20,774.95/31,162.47 = 11,560.39/x
  3. Step 3: Cross multiply
    20,774.95x = 31,162.47 × 11,560.39
  4. Step 4: Simplify right side
    20,774.95x = 360,250,306.56
  5. Step 5: Solve for x
    x = 360,250,306.56/20,774.95
  6. Step 6: Final answer
    x = 17,340.61

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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.