Home / 21,961.12-32,946.90-7,170.08

Finding the Fourth Proportional to 21,961.12, 32,946.90 and 7,170.08

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Solution

The fourth proportional to 21,961.12, 32,946.90 and 7,170.08 is: 10,756.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.12 : 32,946.90 = 7,170.08 : x
  2. Step 2: Convert to fraction form
    21,961.12/32,946.90 = 7,170.08/x
  3. Step 3: Cross multiply
    21,961.12x = 32,946.90 × 7,170.08
  4. Step 4: Simplify right side
    21,961.12x = 236,231,908.75
  5. Step 5: Solve for x
    x = 236,231,908.75/21,961.12
  6. Step 6: Final answer
    x = 10,756.82

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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.