Home / 19,919.72-29,839.51-9,231.10

Finding the Fourth Proportional to 19,919.72, 29,839.51 and 9,231.10

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Solution

The fourth proportional to 19,919.72, 29,839.51 and 9,231.10 is: 13,828.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.72 : 29,839.51 = 9,231.10 : x
  2. Step 2: Convert to fraction form
    19,919.72/29,839.51 = 9,231.10/x
  3. Step 3: Cross multiply
    19,919.72x = 29,839.51 × 9,231.10
  4. Step 4: Simplify right side
    19,919.72x = 275,451,403.08
  5. Step 5: Solve for x
    x = 275,451,403.08/19,919.72
  6. Step 6: Final answer
    x = 13,828.07

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1.5x scale

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.