Home / 21,985.62-32,981.16-7,190.56

Finding the Fourth Proportional to 21,985.62, 32,981.16 and 7,190.56

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Solution

The fourth proportional to 21,985.62, 32,981.16 and 7,190.56 is: 10,786.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,985.62 : 32,981.16 = 7,190.56 : x
  2. Step 2: Convert to fraction form
    21,985.62/32,981.16 = 7,190.56/x
  3. Step 3: Cross multiply
    21,985.62x = 32,981.16 × 7,190.56
  4. Step 4: Simplify right side
    21,985.62x = 237,153,009.85
  5. Step 5: Solve for x
    x = 237,153,009.85/21,985.62
  6. Step 6: Final answer
    x = 10,786.73

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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.