Home / 19,939.76-29,899.56-6,787.76

Finding the Fourth Proportional to 19,939.76, 29,899.56 and 6,787.76

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Solution

The fourth proportional to 19,939.76, 29,899.56 and 6,787.76 is: 10,178.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.76 : 29,899.56 = 6,787.76 : x
  2. Step 2: Convert to fraction form
    19,939.76/29,899.56 = 6,787.76/x
  3. Step 3: Cross multiply
    19,939.76x = 29,899.56 × 6,787.76
  4. Step 4: Simplify right side
    19,939.76x = 202,951,037.39
  5. Step 5: Solve for x
    x = 202,951,037.39/19,939.76
  6. Step 6: Final answer
    x = 10,178.21

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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.