Home / 15,286.68-21,095.82-8,573.76

Finding the Fourth Proportional to 15,286.68, 21,095.82 and 8,573.76

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Solution

The fourth proportional to 15,286.68, 21,095.82 and 8,573.76 is: 11,831.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.68 : 21,095.82 = 8,573.76 : x
  2. Step 2: Convert to fraction form
    15,286.68/21,095.82 = 8,573.76/x
  3. Step 3: Cross multiply
    15,286.68x = 21,095.82 × 8,573.76
  4. Step 4: Simplify right side
    15,286.68x = 180,870,497.68
  5. Step 5: Solve for x
    x = 180,870,497.68/15,286.68
  6. Step 6: Final answer
    x = 11,831.90

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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.