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Finding the Fourth Proportional to 20,026.40, 30,050.40 and 8,340.80

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Solution

The fourth proportional to 20,026.40, 30,050.40 and 8,340.80 is: 12,515.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,026.40 : 30,050.40 = 8,340.80 : x
  2. Step 2: Convert to fraction form
    20,026.40/30,050.40 = 8,340.80/x
  3. Step 3: Cross multiply
    20,026.40x = 30,050.40 × 8,340.80
  4. Step 4: Simplify right side
    20,026.40x = 250,644,376.32
  5. Step 5: Solve for x
    x = 250,644,376.32/20,026.40
  6. Step 6: Final answer
    x = 12,515.70

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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.