Home / 20,705.14-31,058.70-5,916.20

Finding the Fourth Proportional to 20,705.14, 31,058.70 and 5,916.20

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Solution

The fourth proportional to 20,705.14, 31,058.70 and 5,916.20 is: 8,874.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705.14 : 31,058.70 = 5,916.20 : x
  2. Step 2: Convert to fraction form
    20,705.14/31,058.70 = 5,916.20/x
  3. Step 3: Cross multiply
    20,705.14x = 31,058.70 × 5,916.20
  4. Step 4: Simplify right side
    20,705.14x = 183,749,480.94
  5. Step 5: Solve for x
    x = 183,749,480.94/20,705.14
  6. Step 6: Final answer
    x = 8,874.58

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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.