Home / 30,117.62-41,565.15-18,190.78

Finding the Fourth Proportional to 30,117.62, 41,565.15 and 18,190.78

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Solution

The fourth proportional to 30,117.62, 41,565.15 and 18,190.78 is: 25,104.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,117.62 : 41,565.15 = 18,190.78 : x
  2. Step 2: Convert to fraction form
    30,117.62/41,565.15 = 18,190.78/x
  3. Step 3: Cross multiply
    30,117.62x = 41,565.15 × 18,190.78
  4. Step 4: Simplify right side
    30,117.62x = 756,102,395.40
  5. Step 5: Solve for x
    x = 756,102,395.40/30,117.62
  6. Step 6: Final answer
    x = 25,104.98

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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.