Home / 20,293.08-27,986.31-12,740.11

Finding the Fourth Proportional to 20,293.08, 27,986.31 and 12,740.11

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Solution

The fourth proportional to 20,293.08, 27,986.31 and 12,740.11 is: 17,569.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.08 : 27,986.31 = 12,740.11 : x
  2. Step 2: Convert to fraction form
    20,293.08/27,986.31 = 12,740.11/x
  3. Step 3: Cross multiply
    20,293.08x = 27,986.31 × 12,740.11
  4. Step 4: Simplify right side
    20,293.08x = 356,548,676.64
  5. Step 5: Solve for x
    x = 356,548,676.64/20,293.08
  6. Step 6: Final answer
    x = 17,569.97

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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.