Home / 19,419.72-29,135.69-6,939.46

Finding the Fourth Proportional to 19,419.72, 29,135.69 and 6,939.46

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Solution

The fourth proportional to 19,419.72, 29,135.69 and 6,939.46 is: 10,411.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,419.72 : 29,135.69 = 6,939.46 : x
  2. Step 2: Convert to fraction form
    19,419.72/29,135.69 = 6,939.46/x
  3. Step 3: Cross multiply
    19,419.72x = 29,135.69 × 6,939.46
  4. Step 4: Simplify right side
    19,419.72x = 202,186,022.11
  5. Step 5: Solve for x
    x = 202,186,022.11/19,419.72
  6. Step 6: Final answer
    x = 10,411.38

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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.