Home / 10,428.24-15,640.49-5,161.55

Finding the Fourth Proportional to 10,428.24, 15,640.49 and 5,161.55

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Solution

The fourth proportional to 10,428.24, 15,640.49 and 5,161.55 is: 7,741.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,428.24 : 15,640.49 = 5,161.55 : x
  2. Step 2: Convert to fraction form
    10,428.24/15,640.49 = 5,161.55/x
  3. Step 3: Cross multiply
    10,428.24x = 15,640.49 × 5,161.55
  4. Step 4: Simplify right side
    10,428.24x = 80,729,171.16
  5. Step 5: Solve for x
    x = 80,729,171.16/10,428.24
  6. Step 6: Final answer
    x = 7,741.40

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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.