Home / 20,881,129.20-31,321,693.80-19,463,953.20

Finding the Fourth Proportional to 20,881,129.20, 31,321,693.80 and 19,463,953.20

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Solution

The fourth proportional to 20,881,129.20, 31,321,693.80 and 19,463,953.20 is: 29,195,929.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881,129.20 : 31,321,693.80 = 19,463,953.20 : x
  2. Step 2: Convert to fraction form
    20,881,129.20/31,321,693.80 = 19,463,953.20/x
  3. Step 3: Cross multiply
    20,881,129.20x = 31,321,693.80 × 19,463,953.20
  4. Step 4: Simplify right side
    20,881,129.20x = 609,643,982,267,930.12
  5. Step 5: Solve for x
    x = 609,643,982,267,930.12/20,881,129.20
  6. Step 6: Final answer
    x = 29,195,929.80

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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.