Home / 20,275.48-30,416.28-9,181.90

Finding the Fourth Proportional to 20,275.48, 30,416.28 and 9,181.90

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Solution

The fourth proportional to 20,275.48, 30,416.28 and 9,181.90 is: 13,774.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.48 : 30,416.28 = 9,181.90 : x
  2. Step 2: Convert to fraction form
    20,275.48/30,416.28 = 9,181.90/x
  3. Step 3: Cross multiply
    20,275.48x = 30,416.28 × 9,181.90
  4. Step 4: Simplify right side
    20,275.48x = 279,279,241.33
  5. Step 5: Solve for x
    x = 279,279,241.33/20,275.48
  6. Step 6: Final answer
    x = 13,774.24

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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.