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Finding the Fourth Proportional to 20,362.40, 30,535.40 and 8,508.41

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Solution

The fourth proportional to 20,362.40, 30,535.40 and 8,508.41 is: 12,759.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.40 : 30,535.40 = 8,508.41 : x
  2. Step 2: Convert to fraction form
    20,362.40/30,535.40 = 8,508.41/x
  3. Step 3: Cross multiply
    20,362.40x = 30,535.40 × 8,508.41
  4. Step 4: Simplify right side
    20,362.40x = 259,807,702.71
  5. Step 5: Solve for x
    x = 259,807,702.71/20,362.40
  6. Step 6: Final answer
    x = 12,759.19

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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.