Home / 13,401.60-18,485.04-8,087.28

Finding the Fourth Proportional to 13,401.60, 18,485.04 and 8,087.28

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Solution

The fourth proportional to 13,401.60, 18,485.04 and 8,087.28 is: 11,154.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,401.60 : 18,485.04 = 8,087.28 : x
  2. Step 2: Convert to fraction form
    13,401.60/18,485.04 = 8,087.28/x
  3. Step 3: Cross multiply
    13,401.60x = 18,485.04 × 8,087.28
  4. Step 4: Simplify right side
    13,401.60x = 149,493,694.29
  5. Step 5: Solve for x
    x = 149,493,694.29/13,401.60
  6. Step 6: Final answer
    x = 11,154.91

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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.