Home / 30,979.14-42,749.82-17,550.12

Finding the Fourth Proportional to 30,979.14, 42,749.82 and 17,550.12

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Solution

The fourth proportional to 30,979.14, 42,749.82 and 17,550.12 is: 24,218.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.14 : 42,749.82 = 17,550.12 : x
  2. Step 2: Convert to fraction form
    30,979.14/42,749.82 = 17,550.12/x
  3. Step 3: Cross multiply
    30,979.14x = 42,749.82 × 17,550.12
  4. Step 4: Simplify right side
    30,979.14x = 750,264,470.98
  5. Step 5: Solve for x
    x = 750,264,470.98/30,979.14
  6. Step 6: Final answer
    x = 24,218.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.