Home / 20,427.16-30,640.76-6,387.26

Finding the Fourth Proportional to 20,427.16, 30,640.76 and 6,387.26

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Solution

The fourth proportional to 20,427.16, 30,640.76 and 6,387.26 is: 9,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.16 : 30,640.76 = 6,387.26 : x
  2. Step 2: Convert to fraction form
    20,427.16/30,640.76 = 6,387.26/x
  3. Step 3: Cross multiply
    20,427.16x = 30,640.76 × 6,387.26
  4. Step 4: Simplify right side
    20,427.16x = 195,710,500.72
  5. Step 5: Solve for x
    x = 195,710,500.72/20,427.16
  6. Step 6: Final answer
    x = 9,580.90

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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.