Home / 20,812,127.25-28,721,504.58-11,393,578.47

Finding the Fourth Proportional to 20,812,127.25, 28,721,504.58 and 11,393,578.47

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Solution

The fourth proportional to 20,812,127.25, 28,721,504.58 and 11,393,578.47 is: 15,723,559.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812,127.25 : 28,721,504.58 = 11,393,578.47 : x
  2. Step 2: Convert to fraction form
    20,812,127.25/28,721,504.58 = 11,393,578.47/x
  3. Step 3: Cross multiply
    20,812,127.25x = 28,721,504.58 × 11,393,578.47
  4. Step 4: Simplify right side
    20,812,127.25x = 327,240,716,208,694.38
  5. Step 5: Solve for x
    x = 327,240,716,208,694.38/20,812,127.25
  6. Step 6: Final answer
    x = 15,723,559.26

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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.