Home / 13,428.37-20,140.95-3,568.40

Finding the Fourth Proportional to 13,428.37, 20,140.95 and 3,568.40

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Solution

The fourth proportional to 13,428.37, 20,140.95 and 3,568.40 is: 5,352.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.37 : 20,140.95 = 3,568.40 : x
  2. Step 2: Convert to fraction form
    13,428.37/20,140.95 = 3,568.40/x
  3. Step 3: Cross multiply
    13,428.37x = 20,140.95 × 3,568.40
  4. Step 4: Simplify right side
    13,428.37x = 71,870,965.98
  5. Step 5: Solve for x
    x = 71,870,965.98/13,428.37
  6. Step 6: Final answer
    x = 5,352.18

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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.