Home / 27,977.81-38,612.16-20,891.93

Finding the Fourth Proportional to 27,977.81, 38,612.16 and 20,891.93

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Solution

The fourth proportional to 27,977.81, 38,612.16 and 20,891.93 is: 28,832.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,977.81 : 38,612.16 = 20,891.93 : x
  2. Step 2: Convert to fraction form
    27,977.81/38,612.16 = 20,891.93/x
  3. Step 3: Cross multiply
    27,977.81x = 38,612.16 × 20,891.93
  4. Step 4: Simplify right side
    27,977.81x = 806,682,350.81
  5. Step 5: Solve for x
    x = 806,682,350.81/27,977.81
  6. Step 6: Final answer
    x = 28,832.94

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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.