Home / 20,702.20-31,058.12-5,911.32

Finding the Fourth Proportional to 20,702.20, 31,058.12 and 5,911.32

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Solution

The fourth proportional to 20,702.20, 31,058.12 and 5,911.32 is: 8,868.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.20 : 31,058.12 = 5,911.32 : x
  2. Step 2: Convert to fraction form
    20,702.20/31,058.12 = 5,911.32/x
  3. Step 3: Cross multiply
    20,702.20x = 31,058.12 × 5,911.32
  4. Step 4: Simplify right side
    20,702.20x = 183,594,485.92
  5. Step 5: Solve for x
    x = 183,594,485.92/20,702.20
  6. Step 6: Final answer
    x = 8,868.36

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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.