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Finding the Fourth Proportional to 24,429.40, 36,665.70 and 20,930.20

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Solution

The fourth proportional to 24,429.40, 36,665.70 and 20,930.20 is: 31,413.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,429.40 : 36,665.70 = 20,930.20 : x
  2. Step 2: Convert to fraction form
    24,429.40/36,665.70 = 20,930.20/x
  3. Step 3: Cross multiply
    24,429.40x = 36,665.70 × 20,930.20
  4. Step 4: Simplify right side
    24,429.40x = 767,420,434.14
  5. Step 5: Solve for x
    x = 767,420,434.14/24,429.40
  6. Step 6: Final answer
    x = 31,413.81

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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.