Home / 13,589.02-20,382.54-4,228.78

Finding the Fourth Proportional to 13,589.02, 20,382.54 and 4,228.78

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Solution

The fourth proportional to 13,589.02, 20,382.54 and 4,228.78 is: 6,342.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,589.02 : 20,382.54 = 4,228.78 : x
  2. Step 2: Convert to fraction form
    13,589.02/20,382.54 = 4,228.78/x
  3. Step 3: Cross multiply
    13,589.02x = 20,382.54 × 4,228.78
  4. Step 4: Simplify right side
    13,589.02x = 86,193,277.50
  5. Step 5: Solve for x
    x = 86,193,277.50/13,589.02
  6. Step 6: Final answer
    x = 6,342.86

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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.