Home / 21,981.54-32,972.30-6,400.38

Finding the Fourth Proportional to 21,981.54, 32,972.30 and 6,400.38

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Solution

The fourth proportional to 21,981.54, 32,972.30 and 6,400.38 is: 9,600.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981.54 : 32,972.30 = 6,400.38 : x
  2. Step 2: Convert to fraction form
    21,981.54/32,972.30 = 6,400.38/x
  3. Step 3: Cross multiply
    21,981.54x = 32,972.30 × 6,400.38
  4. Step 4: Simplify right side
    21,981.54x = 211,035,249.47
  5. Step 5: Solve for x
    x = 211,035,249.47/21,981.54
  6. Step 6: Final answer
    x = 9,600.57

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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.