Home / 15,990.18-22,083.66-12,172.62

Finding the Fourth Proportional to 15,990.18, 22,083.66 and 12,172.62

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Solution

The fourth proportional to 15,990.18, 22,083.66 and 12,172.62 is: 16,811.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,990.18 : 22,083.66 = 12,172.62 : x
  2. Step 2: Convert to fraction form
    15,990.18/22,083.66 = 12,172.62/x
  3. Step 3: Cross multiply
    15,990.18x = 22,083.66 × 12,172.62
  4. Step 4: Simplify right side
    15,990.18x = 268,816,001.39
  5. Step 5: Solve for x
    x = 268,816,001.39/15,990.18
  6. Step 6: Final answer
    x = 16,811.32

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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.