Home / 13,629.47-20,455.13-7,057.53

Finding the Fourth Proportional to 13,629.47, 20,455.13 and 7,057.53

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Solution

The fourth proportional to 13,629.47, 20,455.13 and 7,057.53 is: 10,591.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.47 : 20,455.13 = 7,057.53 : x
  2. Step 2: Convert to fraction form
    13,629.47/20,455.13 = 7,057.53/x
  3. Step 3: Cross multiply
    13,629.47x = 20,455.13 × 7,057.53
  4. Step 4: Simplify right side
    13,629.47x = 144,362,711.27
  5. Step 5: Solve for x
    x = 144,362,711.27/13,629.47
  6. Step 6: Final answer
    x = 10,591.96

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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.