Home / 20,610.81-30,888.88-11,226.76

Finding the Fourth Proportional to 20,610.81, 30,888.88 and 11,226.76

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Solution

The fourth proportional to 20,610.81, 30,888.88 and 11,226.76 is: 16,825.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610.81 : 30,888.88 = 11,226.76 : x
  2. Step 2: Convert to fraction form
    20,610.81/30,888.88 = 11,226.76/x
  3. Step 3: Cross multiply
    20,610.81x = 30,888.88 × 11,226.76
  4. Step 4: Simplify right side
    20,610.81x = 346,781,937.14
  5. Step 5: Solve for x
    x = 346,781,937.14/20,610.81
  6. Step 6: Final answer
    x = 16,825.25

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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.