Home / 21,906.28-32,856.34-7,115.40

Finding the Fourth Proportional to 21,906.28, 32,856.34 and 7,115.40

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Solution

The fourth proportional to 21,906.28, 32,856.34 and 7,115.40 is: 10,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,906.28 : 32,856.34 = 7,115.40 : x
  2. Step 2: Convert to fraction form
    21,906.28/32,856.34 = 7,115.40/x
  3. Step 3: Cross multiply
    21,906.28x = 32,856.34 × 7,115.40
  4. Step 4: Simplify right side
    21,906.28x = 233,786,001.64
  5. Step 5: Solve for x
    x = 233,786,001.64/21,906.28
  6. Step 6: Final answer
    x = 10,672.10

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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.