Home / 20,140.48-27,793.30-11,187.74

Finding the Fourth Proportional to 20,140.48, 27,793.30 and 11,187.74

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Solution

The fourth proportional to 20,140.48, 27,793.30 and 11,187.74 is: 15,438.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.48 : 27,793.30 = 11,187.74 : x
  2. Step 2: Convert to fraction form
    20,140.48/27,793.30 = 11,187.74/x
  3. Step 3: Cross multiply
    20,140.48x = 27,793.30 × 11,187.74
  4. Step 4: Simplify right side
    20,140.48x = 310,944,214.14
  5. Step 5: Solve for x
    x = 310,944,214.14/20,140.48
  6. Step 6: Final answer
    x = 15,438.77

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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.