Home / 13,428.47-20,141.28-3,568.74

Finding the Fourth Proportional to 13,428.47, 20,141.28 and 3,568.74

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Solution

The fourth proportional to 13,428.47, 20,141.28 and 3,568.74 is: 5,352.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.47 : 20,141.28 = 3,568.74 : x
  2. Step 2: Convert to fraction form
    13,428.47/20,141.28 = 3,568.74/x
  3. Step 3: Cross multiply
    13,428.47x = 20,141.28 × 3,568.74
  4. Step 4: Simplify right side
    13,428.47x = 71,878,991.59
  5. Step 5: Solve for x
    x = 71,878,991.59/13,428.47
  6. Step 6: Final answer
    x = 5,352.73

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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.