Home / 21,981.96-32,976.99-7,191.71

Finding the Fourth Proportional to 21,981.96, 32,976.99 and 7,191.71

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Solution

The fourth proportional to 21,981.96, 32,976.99 and 7,191.71 is: 10,788.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981.96 : 32,976.99 = 7,191.71 : x
  2. Step 2: Convert to fraction form
    21,981.96/32,976.99 = 7,191.71/x
  3. Step 3: Cross multiply
    21,981.96x = 32,976.99 × 7,191.71
  4. Step 4: Simplify right side
    21,981.96x = 237,160,783.87
  5. Step 5: Solve for x
    x = 237,160,783.87/21,981.96
  6. Step 6: Final answer
    x = 10,788.88

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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.