Home / 15,923.28-21,976.20-9,635.76

Finding the Fourth Proportional to 15,923.28, 21,976.20 and 9,635.76

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Solution

The fourth proportional to 15,923.28, 21,976.20 and 9,635.76 is: 13,298.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,923.28 : 21,976.20 = 9,635.76 : x
  2. Step 2: Convert to fraction form
    15,923.28/21,976.20 = 9,635.76/x
  3. Step 3: Cross multiply
    15,923.28x = 21,976.20 × 9,635.76
  4. Step 4: Simplify right side
    15,923.28x = 211,757,388.91
  5. Step 5: Solve for x
    x = 211,757,388.91/15,923.28
  6. Step 6: Final answer
    x = 13,298.60

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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.