Home / 15,910.28-21,958.20-9,622.64

Finding the Fourth Proportional to 15,910.28, 21,958.20 and 9,622.64

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Solution

The fourth proportional to 15,910.28, 21,958.20 and 9,622.64 is: 13,280.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,910.28 : 21,958.20 = 9,622.64 : x
  2. Step 2: Convert to fraction form
    15,910.28/21,958.20 = 9,622.64/x
  3. Step 3: Cross multiply
    15,910.28x = 21,958.20 × 9,622.64
  4. Step 4: Simplify right side
    15,910.28x = 211,295,853.65
  5. Step 5: Solve for x
    x = 211,295,853.65/15,910.28
  6. Step 6: Final answer
    x = 13,280.46

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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.