Home / 19,981.98-29,972.92-18,764.04

Finding the Fourth Proportional to 19,981.98, 29,972.92 and 18,764.04

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Solution

The fourth proportional to 19,981.98, 29,972.92 and 18,764.04 is: 28,146.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.98 : 29,972.92 = 18,764.04 : x
  2. Step 2: Convert to fraction form
    19,981.98/29,972.92 = 18,764.04/x
  3. Step 3: Cross multiply
    19,981.98x = 29,972.92 × 18,764.04
  4. Step 4: Simplify right side
    19,981.98x = 562,413,069.80
  5. Step 5: Solve for x
    x = 562,413,069.80/19,981.98
  6. Step 6: Final answer
    x = 28,146.01

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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.