Home / 21,302,972.80-31,891,473.60-20,057,257.60

Finding the Fourth Proportional to 21,302,972.80, 31,891,473.60 and 20,057,257.60

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Solution

The fourth proportional to 21,302,972.80, 31,891,473.60 and 20,057,257.60 is: 30,026,583.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302,972.80 : 31,891,473.60 = 20,057,257.60 : x
  2. Step 2: Convert to fraction form
    21,302,972.80/31,891,473.60 = 20,057,257.60/x
  3. Step 3: Cross multiply
    21,302,972.80x = 31,891,473.60 × 20,057,257.60
  4. Step 4: Simplify right side
    21,302,972.80x = 639,655,501,238,799.38
  5. Step 5: Solve for x
    x = 639,655,501,238,799.38/21,302,972.80
  6. Step 6: Final answer
    x = 30,026,583.95

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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.