Home / 21,981.42-32,972.67-6,399.18

Finding the Fourth Proportional to 21,981.42, 32,972.67 and 6,399.18

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Solution

The fourth proportional to 21,981.42, 32,972.67 and 6,399.18 is: 9,598.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981.42 : 32,972.67 = 6,399.18 : x
  2. Step 2: Convert to fraction form
    21,981.42/32,972.67 = 6,399.18/x
  3. Step 3: Cross multiply
    21,981.42x = 32,972.67 × 6,399.18
  4. Step 4: Simplify right side
    21,981.42x = 210,998,050.41
  5. Step 5: Solve for x
    x = 210,998,050.41/21,981.42
  6. Step 6: Final answer
    x = 9,598.93

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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.