Home / 30,879.09-42,614.61-18,132.83

Finding the Fourth Proportional to 30,879.09, 42,614.61 and 18,132.83

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Solution

The fourth proportional to 30,879.09, 42,614.61 and 18,132.83 is: 25,024.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,879.09 : 42,614.61 = 18,132.83 : x
  2. Step 2: Convert to fraction form
    30,879.09/42,614.61 = 18,132.83/x
  3. Step 3: Cross multiply
    30,879.09x = 42,614.61 × 18,132.83
  4. Step 4: Simplify right side
    30,879.09x = 772,723,478.65
  5. Step 5: Solve for x
    x = 772,723,478.65/30,879.09
  6. Step 6: Final answer
    x = 25,024.17

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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.