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Finding the Fourth Proportional to 19,903.40, 29,853.90 and 8,806.84

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Solution

The fourth proportional to 19,903.40, 29,853.90 and 8,806.84 is: 13,209.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,903.40 : 29,853.90 = 8,806.84 : x
  2. Step 2: Convert to fraction form
    19,903.40/29,853.90 = 8,806.84/x
  3. Step 3: Cross multiply
    19,903.40x = 29,853.90 × 8,806.84
  4. Step 4: Simplify right side
    19,903.40x = 262,918,520.68
  5. Step 5: Solve for x
    x = 262,918,520.68/19,903.40
  6. Step 6: Final answer
    x = 13,209.73

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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.