Home / 15,912.28-21,960.96-9,624.64

Finding the Fourth Proportional to 15,912.28, 21,960.96 and 9,624.64

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Solution

The fourth proportional to 15,912.28, 21,960.96 and 9,624.64 is: 13,283.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,912.28 : 21,960.96 = 9,624.64 : x
  2. Step 2: Convert to fraction form
    15,912.28/21,960.96 = 9,624.64/x
  3. Step 3: Cross multiply
    15,912.28x = 21,960.96 × 9,624.64
  4. Step 4: Simplify right side
    15,912.28x = 211,366,334.05
  5. Step 5: Solve for x
    x = 211,366,334.05/15,912.28
  6. Step 6: Final answer
    x = 13,283.22

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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.