Home / 21,799.53-30,084.21-12,846.60

Finding the Fourth Proportional to 21,799.53, 30,084.21 and 12,846.60

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Solution

The fourth proportional to 21,799.53, 30,084.21 and 12,846.60 is: 17,728.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,799.53 : 30,084.21 = 12,846.60 : x
  2. Step 2: Convert to fraction form
    21,799.53/30,084.21 = 12,846.60/x
  3. Step 3: Cross multiply
    21,799.53x = 30,084.21 × 12,846.60
  4. Step 4: Simplify right side
    21,799.53x = 386,479,812.19
  5. Step 5: Solve for x
    x = 386,479,812.19/21,799.53
  6. Step 6: Final answer
    x = 17,728.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.