Home / 28,700,752.20-39,644,845.12-21,273,470.96

Finding the Fourth Proportional to 28,700,752.20, 39,644,845.12 and 21,273,470.96

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Solution

The fourth proportional to 28,700,752.20, 39,644,845.12 and 21,273,470.96 is: 29,385,413.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,700,752.20 : 39,644,845.12 = 21,273,470.96 : x
  2. Step 2: Convert to fraction form
    28,700,752.20/39,644,845.12 = 21,273,470.96/x
  3. Step 3: Cross multiply
    28,700,752.20x = 39,644,845.12 × 21,273,470.96
  4. Step 4: Simplify right side
    28,700,752.20x = 843,383,461,374,017.75
  5. Step 5: Solve for x
    x = 843,383,461,374,017.75/28,700,752.20
  6. Step 6: Final answer
    x = 29,385,413.16

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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.