Home / 10,900.40-16,318.20-7,206.80

Finding the Fourth Proportional to 10,900.40, 16,318.20 and 7,206.80

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Solution

The fourth proportional to 10,900.40, 16,318.20 and 7,206.80 is: 10,788.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.40 : 16,318.20 = 7,206.80 : x
  2. Step 2: Convert to fraction form
    10,900.40/16,318.20 = 7,206.80/x
  3. Step 3: Cross multiply
    10,900.40x = 16,318.20 × 7,206.80
  4. Step 4: Simplify right side
    10,900.40x = 117,602,003.76
  5. Step 5: Solve for x
    x = 117,602,003.76/10,900.40
  6. Step 6: Final answer
    x = 10,788.78

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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.