Home / 28,342.20-42,513.30-15,900.60

Finding the Fourth Proportional to 28,342.20, 42,513.30 and 15,900.60

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Solution

The fourth proportional to 28,342.20, 42,513.30 and 15,900.60 is: 23,850.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,342.20 : 42,513.30 = 15,900.60 : x
  2. Step 2: Convert to fraction form
    28,342.20/42,513.30 = 15,900.60/x
  3. Step 3: Cross multiply
    28,342.20x = 42,513.30 × 15,900.60
  4. Step 4: Simplify right side
    28,342.20x = 675,986,977.98
  5. Step 5: Solve for x
    x = 675,986,977.98/28,342.20
  6. Step 6: Final answer
    x = 23,850.90

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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.