Home / 20,909.20-31,360.62-6,114.16

Finding the Fourth Proportional to 20,909.20, 31,360.62 and 6,114.16

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Solution

The fourth proportional to 20,909.20, 31,360.62 and 6,114.16 is: 9,170.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,909.20 : 31,360.62 = 6,114.16 : x
  2. Step 2: Convert to fraction form
    20,909.20/31,360.62 = 6,114.16/x
  3. Step 3: Cross multiply
    20,909.20x = 31,360.62 × 6,114.16
  4. Step 4: Simplify right side
    20,909.20x = 191,743,848.38
  5. Step 5: Solve for x
    x = 191,743,848.38/20,909.20
  6. Step 6: Final answer
    x = 9,170.31

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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.