Home / 13,401.25-20,099.14-5,078.40

Finding the Fourth Proportional to 13,401.25, 20,099.14 and 5,078.40

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Solution

The fourth proportional to 13,401.25, 20,099.14 and 5,078.40 is: 7,616.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.25 : 20,099.14 = 5,078.40 : x
  2. Step 2: Convert to fraction form
    13,401.25/20,099.14 = 5,078.40/x
  3. Step 3: Cross multiply
    13,401.25x = 20,099.14 × 5,078.40
  4. Step 4: Simplify right side
    13,401.25x = 102,071,384.51
  5. Step 5: Solve for x
    x = 102,071,384.51/13,401.25
  6. Step 6: Final answer
    x = 7,616.56

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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.