Home / 20,913,340.68-31,382,289-8,781,870.24

Finding the Fourth Proportional to 20,913,340.68, 31,382,289 and 8,781,870.24

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Solution

The fourth proportional to 20,913,340.68, 31,382,289 and 8,781,870.24 is: 13,177,961.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913,340.68 : 31,382,289 = 8,781,870.24 : x
  2. Step 2: Convert to fraction form
    20,913,340.68/31,382,289 = 8,781,870.24/x
  3. Step 3: Cross multiply
    20,913,340.68x = 31,382,289 × 8,781,870.24
  4. Step 4: Simplify right side
    20,913,340.68x = 275,595,189,832,179.38
  5. Step 5: Solve for x
    x = 275,595,189,832,179.38/20,913,340.68
  6. Step 6: Final answer
    x = 13,177,961.09

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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.