Home / 19,909.85-29,864.77-7,429.37

Finding the Fourth Proportional to 19,909.85, 29,864.77 and 7,429.37

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Solution

The fourth proportional to 19,909.85, 29,864.77 and 7,429.37 is: 11,144.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,909.85 : 29,864.77 = 7,429.37 : x
  2. Step 2: Convert to fraction form
    19,909.85/29,864.77 = 7,429.37/x
  3. Step 3: Cross multiply
    19,909.85x = 29,864.77 × 7,429.37
  4. Step 4: Simplify right side
    19,909.85x = 221,876,258.40
  5. Step 5: Solve for x
    x = 221,876,258.40/19,909.85
  6. Step 6: Final answer
    x = 11,144.05

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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.