Home / 20,790,862.25-31,161,802.28-8,487,141.59

Finding the Fourth Proportional to 20,790,862.25, 31,161,802.28 and 8,487,141.59

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Solution

The fourth proportional to 20,790,862.25, 31,161,802.28 and 8,487,141.59 is: 12,720,714.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,862.25 : 31,161,802.28 = 8,487,141.59 : x
  2. Step 2: Convert to fraction form
    20,790,862.25/31,161,802.28 = 8,487,141.59/x
  3. Step 3: Cross multiply
    20,790,862.25x = 31,161,802.28 × 8,487,141.59
  4. Step 4: Simplify right side
    20,790,862.25x = 264,474,628,185,413.59
  5. Step 5: Solve for x
    x = 264,474,628,185,413.59/20,790,862.25
  6. Step 6: Final answer
    x = 12,720,714.76

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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.