Home / 19,972.74-29,900.79-18,731.01

Finding the Fourth Proportional to 19,972.74, 29,900.79 and 18,731.01

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Solution

The fourth proportional to 19,972.74, 29,900.79 and 18,731.01 is: 28,041.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,972.74 : 29,900.79 = 18,731.01 : x
  2. Step 2: Convert to fraction form
    19,972.74/29,900.79 = 18,731.01/x
  3. Step 3: Cross multiply
    19,972.74x = 29,900.79 × 18,731.01
  4. Step 4: Simplify right side
    19,972.74x = 560,071,996.50
  5. Step 5: Solve for x
    x = 560,071,996.50/19,972.74
  6. Step 6: Final answer
    x = 28,041.82

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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.