Home / 20,101.15-27,721.43-12,548.17

Finding the Fourth Proportional to 20,101.15, 27,721.43 and 12,548.17

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Solution

The fourth proportional to 20,101.15, 27,721.43 and 12,548.17 is: 17,305.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,101.15 : 27,721.43 = 12,548.17 : x
  2. Step 2: Convert to fraction form
    20,101.15/27,721.43 = 12,548.17/x
  3. Step 3: Cross multiply
    20,101.15x = 27,721.43 × 12,548.17
  4. Step 4: Simplify right side
    20,101.15x = 347,853,313.22
  5. Step 5: Solve for x
    x = 347,853,313.22/20,101.15
  6. Step 6: Final answer
    x = 17,305.15

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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.