Home / 20,187.50-27,858.53-11,234.84

Finding the Fourth Proportional to 20,187.50, 27,858.53 and 11,234.84

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Solution

The fourth proportional to 20,187.50, 27,858.53 and 11,234.84 is: 15,503.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.50 : 27,858.53 = 11,234.84 : x
  2. Step 2: Convert to fraction form
    20,187.50/27,858.53 = 11,234.84/x
  3. Step 3: Cross multiply
    20,187.50x = 27,858.53 × 11,234.84
  4. Step 4: Simplify right side
    20,187.50x = 312,985,931.72
  5. Step 5: Solve for x
    x = 312,985,931.72/20,187.50
  6. Step 6: Final answer
    x = 15,503.95

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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.