Home / 30,979.99-42,754.03-17,553.86

Finding the Fourth Proportional to 30,979.99, 42,754.03 and 17,553.86

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Solution

The fourth proportional to 30,979.99, 42,754.03 and 17,553.86 is: 24,225.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,979.99 : 42,754.03 = 17,553.86 : x
  2. Step 2: Convert to fraction form
    30,979.99/42,754.03 = 17,553.86/x
  3. Step 3: Cross multiply
    30,979.99x = 42,754.03 × 17,553.86
  4. Step 4: Simplify right side
    30,979.99x = 750,498,400.22
  5. Step 5: Solve for x
    x = 750,498,400.22/30,979.99
  6. Step 6: Final answer
    x = 24,225.26

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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.