Home / 19,920.78-29,874.15-5,877.06

Finding the Fourth Proportional to 19,920.78, 29,874.15 and 5,877.06

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Solution

The fourth proportional to 19,920.78, 29,874.15 and 5,877.06 is: 8,813.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.78 : 29,874.15 = 5,877.06 : x
  2. Step 2: Convert to fraction form
    19,920.78/29,874.15 = 5,877.06/x
  3. Step 3: Cross multiply
    19,920.78x = 29,874.15 × 5,877.06
  4. Step 4: Simplify right side
    19,920.78x = 175,572,172.00
  5. Step 5: Solve for x
    x = 175,572,172.00/19,920.78
  6. Step 6: Final answer
    x = 8,813.52

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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.