Home / 20,288.88-30,429.68-9,193.50

Finding the Fourth Proportional to 20,288.88, 30,429.68 and 9,193.50

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Solution

The fourth proportional to 20,288.88, 30,429.68 and 9,193.50 is: 13,788.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.88 : 30,429.68 = 9,193.50 : x
  2. Step 2: Convert to fraction form
    20,288.88/30,429.68 = 9,193.50/x
  3. Step 3: Cross multiply
    20,288.88x = 30,429.68 × 9,193.50
  4. Step 4: Simplify right side
    20,288.88x = 279,755,217.11
  5. Step 5: Solve for x
    x = 279,755,217.11/20,288.88
  6. Step 6: Final answer
    x = 13,788.60

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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.