Home / 19,979.85-29,961.06-10,617.62

Finding the Fourth Proportional to 19,979.85, 29,961.06 and 10,617.62

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Solution

The fourth proportional to 19,979.85, 29,961.06 and 10,617.62 is: 15,921.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,979.85 : 29,961.06 = 10,617.62 : x
  2. Step 2: Convert to fraction form
    19,979.85/29,961.06 = 10,617.62/x
  3. Step 3: Cross multiply
    19,979.85x = 29,961.06 × 10,617.62
  4. Step 4: Simplify right side
    19,979.85x = 318,114,960.26
  5. Step 5: Solve for x
    x = 318,114,960.26/19,979.85
  6. Step 6: Final answer
    x = 15,921.79

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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.