Home / 19,787.85-29,682.09-6,460.80

Finding the Fourth Proportional to 19,787.85, 29,682.09 and 6,460.80

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Solution

The fourth proportional to 19,787.85, 29,682.09 and 6,460.80 is: 9,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,787.85 : 29,682.09 = 6,460.80 : x
  2. Step 2: Convert to fraction form
    19,787.85/29,682.09 = 6,460.80/x
  3. Step 3: Cross multiply
    19,787.85x = 29,682.09 × 6,460.80
  4. Step 4: Simplify right side
    19,787.85x = 191,770,047.07
  5. Step 5: Solve for x
    x = 191,770,047.07/19,787.85
  6. Step 6: Final answer
    x = 9,691.30

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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.