Home / 20,940,328.20-28,899,398.12-11,649,648.45

Finding the Fourth Proportional to 20,940,328.20, 28,899,398.12 and 11,649,648.45

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Solution

The fourth proportional to 20,940,328.20, 28,899,398.12 and 11,649,648.45 is: 16,077,485.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,940,328.20 : 28,899,398.12 = 11,649,648.45 : x
  2. Step 2: Convert to fraction form
    20,940,328.20/28,899,398.12 = 11,649,648.45/x
  3. Step 3: Cross multiply
    20,940,328.20x = 28,899,398.12 × 11,649,648.45
  4. Step 4: Simplify right side
    20,940,328.20x = 336,667,828,456,342.62
  5. Step 5: Solve for x
    x = 336,667,828,456,342.62/20,940,328.20
  6. Step 6: Final answer
    x = 16,077,485.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.