Home / 15,382.06-21,223.51-8,667.70

Finding the Fourth Proportional to 15,382.06, 21,223.51 and 8,667.70

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Solution

The fourth proportional to 15,382.06, 21,223.51 and 8,667.70 is: 11,959.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382.06 : 21,223.51 = 8,667.70 : x
  2. Step 2: Convert to fraction form
    15,382.06/21,223.51 = 8,667.70/x
  3. Step 3: Cross multiply
    15,382.06x = 21,223.51 × 8,667.70
  4. Step 4: Simplify right side
    15,382.06x = 183,958,942.90
  5. Step 5: Solve for x
    x = 183,958,942.90/15,382.06
  6. Step 6: Final answer
    x = 11,959.32

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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.