Home / 13,401.60-18,494.34-7,351.80

Finding the Fourth Proportional to 13,401.60, 18,494.34 and 7,351.80

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Solution

The fourth proportional to 13,401.60, 18,494.34 and 7,351.80 is: 10,145.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.60 : 18,494.34 = 7,351.80 : x
  2. Step 2: Convert to fraction form
    13,401.60/18,494.34 = 7,351.80/x
  3. Step 3: Cross multiply
    13,401.60x = 18,494.34 × 7,351.80
  4. Step 4: Simplify right side
    13,401.60x = 135,966,688.81
  5. Step 5: Solve for x
    x = 135,966,688.81/13,401.60
  6. Step 6: Final answer
    x = 10,145.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.