Home / 20,702.90-31,054.62-5,912.30

Finding the Fourth Proportional to 20,702.90, 31,054.62 and 5,912.30

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Solution

The fourth proportional to 20,702.90, 31,054.62 and 5,912.30 is: 8,868.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.90 : 31,054.62 = 5,912.30 : x
  2. Step 2: Convert to fraction form
    20,702.90/31,054.62 = 5,912.30/x
  3. Step 3: Cross multiply
    20,702.90x = 31,054.62 × 5,912.30
  4. Step 4: Simplify right side
    20,702.90x = 183,604,229.83
  5. Step 5: Solve for x
    x = 183,604,229.83/20,702.90
  6. Step 6: Final answer
    x = 8,868.53

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1.5x scale

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.