Home / 28,140.21-42,216.21-10,609.92

Finding the Fourth Proportional to 28,140.21, 42,216.21 and 10,609.92

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Solution

The fourth proportional to 28,140.21, 42,216.21 and 10,609.92 is: 15,917.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.21 : 42,216.21 = 10,609.92 : x
  2. Step 2: Convert to fraction form
    28,140.21/42,216.21 = 10,609.92/x
  3. Step 3: Cross multiply
    28,140.21x = 42,216.21 × 10,609.92
  4. Step 4: Simplify right side
    28,140.21x = 447,910,610.80
  5. Step 5: Solve for x
    x = 447,910,610.80/28,140.21
  6. Step 6: Final answer
    x = 15,917.10

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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.