Home / 19,839.75-29,767.13-10,479.39

Finding the Fourth Proportional to 19,839.75, 29,767.13 and 10,479.39

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Solution

The fourth proportional to 19,839.75, 29,767.13 and 10,479.39 is: 15,723.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,839.75 : 29,767.13 = 10,479.39 : x
  2. Step 2: Convert to fraction form
    19,839.75/29,767.13 = 10,479.39/x
  3. Step 3: Cross multiply
    19,839.75x = 29,767.13 × 10,479.39
  4. Step 4: Simplify right side
    19,839.75x = 311,941,312.05
  5. Step 5: Solve for x
    x = 311,941,312.05/19,839.75
  6. Step 6: Final answer
    x = 15,723.05

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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.