Home / 20,135.81-27,787.43-11,752.31

Finding the Fourth Proportional to 20,135.81, 27,787.43 and 11,752.31

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Solution

The fourth proportional to 20,135.81, 27,787.43 and 11,752.31 is: 16,218.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.81 : 27,787.43 = 11,752.31 : x
  2. Step 2: Convert to fraction form
    20,135.81/27,787.43 = 11,752.31/x
  3. Step 3: Cross multiply
    20,135.81x = 27,787.43 × 11,752.31
  4. Step 4: Simplify right side
    20,135.81x = 326,566,590.31
  5. Step 5: Solve for x
    x = 326,566,590.31/20,135.81
  6. Step 6: Final answer
    x = 16,218.20

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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.