Home / 27,756.64-38,305.08-15,181.39

Finding the Fourth Proportional to 27,756.64, 38,305.08 and 15,181.39

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Solution

The fourth proportional to 27,756.64, 38,305.08 and 15,181.39 is: 20,950.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,756.64 : 38,305.08 = 15,181.39 : x
  2. Step 2: Convert to fraction form
    27,756.64/38,305.08 = 15,181.39/x
  3. Step 3: Cross multiply
    27,756.64x = 38,305.08 × 15,181.39
  4. Step 4: Simplify right side
    27,756.64x = 581,524,091.03
  5. Step 5: Solve for x
    x = 581,524,091.03/27,756.64
  6. Step 6: Final answer
    x = 20,950.81

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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.