Home / 15,907.06-21,947.79-8,831.71

Finding the Fourth Proportional to 15,907.06, 21,947.79 and 8,831.71

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Solution

The fourth proportional to 15,907.06, 21,947.79 and 8,831.71 is: 12,185.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,907.06 : 21,947.79 = 8,831.71 : x
  2. Step 2: Convert to fraction form
    15,907.06/21,947.79 = 8,831.71/x
  3. Step 3: Cross multiply
    15,907.06x = 21,947.79 × 8,831.71
  4. Step 4: Simplify right side
    15,907.06x = 193,836,516.42
  5. Step 5: Solve for x
    x = 193,836,516.42/15,907.06
  6. Step 6: Final answer
    x = 12,185.57

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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.