Home / 29,121.28-43,703.62-21,642.08

Finding the Fourth Proportional to 29,121.28, 43,703.62 and 21,642.08

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Solution

The fourth proportional to 29,121.28, 43,703.62 and 21,642.08 is: 32,479.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,121.28 : 43,703.62 = 21,642.08 : x
  2. Step 2: Convert to fraction form
    29,121.28/43,703.62 = 21,642.08/x
  3. Step 3: Cross multiply
    29,121.28x = 43,703.62 × 21,642.08
  4. Step 4: Simplify right side
    29,121.28x = 945,836,967.71
  5. Step 5: Solve for x
    x = 945,836,967.71/29,121.28
  6. Step 6: Final answer
    x = 32,479.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.