Home / 22,782.28-31,438.78-13,350.64

Finding the Fourth Proportional to 22,782.28, 31,438.78 and 13,350.64

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Solution

The fourth proportional to 22,782.28, 31,438.78 and 13,350.64 is: 18,423.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,782.28 : 31,438.78 = 13,350.64 : x
  2. Step 2: Convert to fraction form
    22,782.28/31,438.78 = 13,350.64/x
  3. Step 3: Cross multiply
    22,782.28x = 31,438.78 × 13,350.64
  4. Step 4: Simplify right side
    22,782.28x = 419,727,833.82
  5. Step 5: Solve for x
    x = 419,727,833.82/22,782.28
  6. Step 6: Final answer
    x = 18,423.43

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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.