Home / 15,696.18-21,660.62-8,981.48

Finding the Fourth Proportional to 15,696.18, 21,660.62 and 8,981.48

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Solution

The fourth proportional to 15,696.18, 21,660.62 and 8,981.48 is: 12,394.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.18 : 21,660.62 = 8,981.48 : x
  2. Step 2: Convert to fraction form
    15,696.18/21,660.62 = 8,981.48/x
  3. Step 3: Cross multiply
    15,696.18x = 21,660.62 × 8,981.48
  4. Step 4: Simplify right side
    15,696.18x = 194,544,434.56
  5. Step 5: Solve for x
    x = 194,544,434.56/15,696.18
  6. Step 6: Final answer
    x = 12,394.38

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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.