Home / 28,216.96-42,288.30-15,742.85

Finding the Fourth Proportional to 28,216.96, 42,288.30 and 15,742.85

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Solution

The fourth proportional to 28,216.96, 42,288.30 and 15,742.85 is: 23,593.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,216.96 : 42,288.30 = 15,742.85 : x
  2. Step 2: Convert to fraction form
    28,216.96/42,288.30 = 15,742.85/x
  3. Step 3: Cross multiply
    28,216.96x = 42,288.30 × 15,742.85
  4. Step 4: Simplify right side
    28,216.96x = 665,738,430.02
  5. Step 5: Solve for x
    x = 665,738,430.02/28,216.96
  6. Step 6: Final answer
    x = 23,593.56

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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.