Home / 20,802,305.44-31,182,987.66-12,155,432.32

Finding the Fourth Proportional to 20,802,305.44, 31,182,987.66 and 12,155,432.32

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Solution

The fourth proportional to 20,802,305.44, 31,182,987.66 and 12,155,432.32 is: 18,221,186.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802,305.44 : 31,182,987.66 = 12,155,432.32 : x
  2. Step 2: Convert to fraction form
    20,802,305.44/31,182,987.66 = 12,155,432.32/x
  3. Step 3: Cross multiply
    20,802,305.44x = 31,182,987.66 × 12,155,432.32
  4. Step 4: Simplify right side
    20,802,305.44x = 379,042,696,036,525.19
  5. Step 5: Solve for x
    x = 379,042,696,036,525.19/20,802,305.44
  6. Step 6: Final answer
    x = 18,221,186.93

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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.