Home / 19,920.31-29,877.57-5,879.65

Finding the Fourth Proportional to 19,920.31, 29,877.57 and 5,879.65

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Solution

The fourth proportional to 19,920.31, 29,877.57 and 5,879.65 is: 8,818.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.31 : 29,877.57 = 5,879.65 : x
  2. Step 2: Convert to fraction form
    19,920.31/29,877.57 = 5,879.65/x
  3. Step 3: Cross multiply
    19,920.31x = 29,877.57 × 5,879.65
  4. Step 4: Simplify right side
    19,920.31x = 175,669,654.45
  5. Step 5: Solve for x
    x = 175,669,654.45/19,920.31
  6. Step 6: Final answer
    x = 8,818.62

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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.