Home / 20,187.97-27,873.11-12,637.35

Finding the Fourth Proportional to 20,187.97, 27,873.11 and 12,637.35

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Solution

The fourth proportional to 20,187.97, 27,873.11 and 12,637.35 is: 17,448.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.97 : 27,873.11 = 12,637.35 : x
  2. Step 2: Convert to fraction form
    20,187.97/27,873.11 = 12,637.35/x
  3. Step 3: Cross multiply
    20,187.97x = 27,873.11 × 12,637.35
  4. Step 4: Simplify right side
    20,187.97x = 352,242,278.25
  5. Step 5: Solve for x
    x = 352,242,278.25/20,187.97
  6. Step 6: Final answer
    x = 17,448.13

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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.