Home / 15,979.80-23,940.90-13,042.20

Finding the Fourth Proportional to 15,979.80, 23,940.90 and 13,042.20

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Solution

The fourth proportional to 15,979.80, 23,940.90 and 13,042.20 is: 19,539.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,979.80 : 23,940.90 = 13,042.20 : x
  2. Step 2: Convert to fraction form
    15,979.80/23,940.90 = 13,042.20/x
  3. Step 3: Cross multiply
    15,979.80x = 23,940.90 × 13,042.20
  4. Step 4: Simplify right side
    15,979.80x = 312,242,005.98
  5. Step 5: Solve for x
    x = 312,242,005.98/15,979.80
  6. Step 6: Final answer
    x = 19,539.79

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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.