Home / 20,267.13-27,969.11-12,713.78

Finding the Fourth Proportional to 20,267.13, 27,969.11 and 12,713.78

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Solution

The fourth proportional to 20,267.13, 27,969.11 and 12,713.78 is: 17,545.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267.13 : 27,969.11 = 12,713.78 : x
  2. Step 2: Convert to fraction form
    20,267.13/27,969.11 = 12,713.78/x
  3. Step 3: Cross multiply
    20,267.13x = 27,969.11 × 12,713.78
  4. Step 4: Simplify right side
    20,267.13x = 355,593,111.34
  5. Step 5: Solve for x
    x = 355,593,111.34/20,267.13
  6. Step 6: Final answer
    x = 17,545.31

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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.