Home / 20,318.02-28,040.50-11,367.52

Finding the Fourth Proportional to 20,318.02, 28,040.50 and 11,367.52

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Solution

The fourth proportional to 20,318.02, 28,040.50 and 11,367.52 is: 15,688.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.02 : 28,040.50 = 11,367.52 : x
  2. Step 2: Convert to fraction form
    20,318.02/28,040.50 = 11,367.52/x
  3. Step 3: Cross multiply
    20,318.02x = 28,040.50 × 11,367.52
  4. Step 4: Simplify right side
    20,318.02x = 318,750,944.56
  5. Step 5: Solve for x
    x = 318,750,944.56/20,318.02
  6. Step 6: Final answer
    x = 15,688.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.