Home / 20,199.80-30,263.70-9,788.60

Finding the Fourth Proportional to 20,199.80, 30,263.70 and 9,788.60

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Solution

The fourth proportional to 20,199.80, 30,263.70 and 9,788.60 is: 14,665.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199.80 : 30,263.70 = 9,788.60 : x
  2. Step 2: Convert to fraction form
    20,199.80/30,263.70 = 9,788.60/x
  3. Step 3: Cross multiply
    20,199.80x = 30,263.70 × 9,788.60
  4. Step 4: Simplify right side
    20,199.80x = 296,239,253.82
  5. Step 5: Solve for x
    x = 296,239,253.82/20,199.80
  6. Step 6: Final answer
    x = 14,665.45

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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.