Home / 28,340,531.71-39,108,675.72-15,782,234.20

Finding the Fourth Proportional to 28,340,531.71, 39,108,675.72 and 15,782,234.20

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Solution

The fourth proportional to 28,340,531.71, 39,108,675.72 and 15,782,234.20 is: 21,778,782.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,340,531.71 : 39,108,675.72 = 15,782,234.20 : x
  2. Step 2: Convert to fraction form
    28,340,531.71/39,108,675.72 = 15,782,234.20/x
  3. Step 3: Cross multiply
    28,340,531.71x = 39,108,675.72 × 15,782,234.20
  4. Step 4: Simplify right side
    28,340,531.71x = 617,222,279,190,439.12
  5. Step 5: Solve for x
    x = 617,222,279,190,439.12/28,340,531.71
  6. Step 6: Final answer
    x = 21,778,782.61

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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.