Home / 20,827.28-31,240.89-6,787.29

Finding the Fourth Proportional to 20,827.28, 31,240.89 and 6,787.29

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Solution

The fourth proportional to 20,827.28, 31,240.89 and 6,787.29 is: 10,180.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.28 : 31,240.89 = 6,787.29 : x
  2. Step 2: Convert to fraction form
    20,827.28/31,240.89 = 6,787.29/x
  3. Step 3: Cross multiply
    20,827.28x = 31,240.89 × 6,787.29
  4. Step 4: Simplify right side
    20,827.28x = 212,040,980.29
  5. Step 5: Solve for x
    x = 212,040,980.29/20,827.28
  6. Step 6: Final answer
    x = 10,180.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.