Home / 20,192.93-27,870.89-13,107.05

Finding the Fourth Proportional to 20,192.93, 27,870.89 and 13,107.05

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Solution

The fourth proportional to 20,192.93, 27,870.89 and 13,107.05 is: 18,090.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,192.93 : 27,870.89 = 13,107.05 : x
  2. Step 2: Convert to fraction form
    20,192.93/27,870.89 = 13,107.05/x
  3. Step 3: Cross multiply
    20,192.93x = 27,870.89 × 13,107.05
  4. Step 4: Simplify right side
    20,192.93x = 365,305,048.40
  5. Step 5: Solve for x
    x = 365,305,048.40/20,192.93
  6. Step 6: Final answer
    x = 18,090.74

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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.