Home / 20,830.29-31,248.68-6,787.05

Finding the Fourth Proportional to 20,830.29, 31,248.68 and 6,787.05

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Solution

The fourth proportional to 20,830.29, 31,248.68 and 6,787.05 is: 10,181.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.29 : 31,248.68 = 6,787.05 : x
  2. Step 2: Convert to fraction form
    20,830.29/31,248.68 = 6,787.05/x
  3. Step 3: Cross multiply
    20,830.29x = 31,248.68 × 6,787.05
  4. Step 4: Simplify right side
    20,830.29x = 212,086,353.59
  5. Step 5: Solve for x
    x = 212,086,353.59/20,830.29
  6. Step 6: Final answer
    x = 10,181.63

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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.