Home / 20,140.29-27,793.04-11,187.63

Finding the Fourth Proportional to 20,140.29, 27,793.04 and 11,187.63

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Solution

The fourth proportional to 20,140.29, 27,793.04 and 11,187.63 is: 15,438.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.29 : 27,793.04 = 11,187.63 : x
  2. Step 2: Convert to fraction form
    20,140.29/27,793.04 = 11,187.63/x
  3. Step 3: Cross multiply
    20,140.29x = 27,793.04 × 11,187.63
  4. Step 4: Simplify right side
    20,140.29x = 310,938,192.16
  5. Step 5: Solve for x
    x = 310,938,192.16/20,140.29
  6. Step 6: Final answer
    x = 15,438.62

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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.