Home / 15,990.42-23,989.68-11,319.57

Finding the Fourth Proportional to 15,990.42, 23,989.68 and 11,319.57

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Solution

The fourth proportional to 15,990.42, 23,989.68 and 11,319.57 is: 16,982.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,990.42 : 23,989.68 = 11,319.57 : x
  2. Step 2: Convert to fraction form
    15,990.42/23,989.68 = 11,319.57/x
  3. Step 3: Cross multiply
    15,990.42x = 23,989.68 × 11,319.57
  4. Step 4: Simplify right side
    15,990.42x = 271,552,862.04
  5. Step 5: Solve for x
    x = 271,552,862.04/15,990.42
  6. Step 6: Final answer
    x = 16,982.22

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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.