Home / 20,263.67-27,961.86-11,188.45

Finding the Fourth Proportional to 20,263.67, 27,961.86 and 11,188.45

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Solution

The fourth proportional to 20,263.67, 27,961.86 and 11,188.45 is: 15,438.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,263.67 : 27,961.86 = 11,188.45 : x
  2. Step 2: Convert to fraction form
    20,263.67/27,961.86 = 11,188.45/x
  3. Step 3: Cross multiply
    20,263.67x = 27,961.86 × 11,188.45
  4. Step 4: Simplify right side
    20,263.67x = 312,849,872.52
  5. Step 5: Solve for x
    x = 312,849,872.52/20,263.67
  6. Step 6: Final answer
    x = 15,438.95

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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.