Home / 15,382.28-21,226.74-8,667.92

Finding the Fourth Proportional to 15,382.28, 21,226.74 and 8,667.92

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Solution

The fourth proportional to 15,382.28, 21,226.74 and 8,667.92 is: 11,961.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,382.28 : 21,226.74 = 8,667.92 : x
  2. Step 2: Convert to fraction form
    15,382.28/21,226.74 = 8,667.92/x
  3. Step 3: Cross multiply
    15,382.28x = 21,226.74 × 8,667.92
  4. Step 4: Simplify right side
    15,382.28x = 183,991,684.18
  5. Step 5: Solve for x
    x = 183,991,684.18/15,382.28
  6. Step 6: Final answer
    x = 11,961.28

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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.