Home / 21,215,120.38-31,805,517.66-6,634,538.31

Finding the Fourth Proportional to 21,215,120.38, 31,805,517.66 and 6,634,538.31

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Solution

The fourth proportional to 21,215,120.38, 31,805,517.66 and 6,634,538.31 is: 9,946,440.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,215,120.38 : 31,805,517.66 = 6,634,538.31 : x
  2. Step 2: Convert to fraction form
    21,215,120.38/31,805,517.66 = 6,634,538.31/x
  3. Step 3: Cross multiply
    21,215,120.38x = 31,805,517.66 × 6,634,538.31
  4. Step 4: Simplify right side
    21,215,120.38x = 211,014,925,384,651.53
  5. Step 5: Solve for x
    x = 211,014,925,384,651.53/21,215,120.38
  6. Step 6: Final answer
    x = 9,946,440.16

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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.