Home / 13,210.11-18,229.19-7,904.88

Finding the Fourth Proportional to 13,210.11, 18,229.19 and 7,904.88

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Solution

The fourth proportional to 13,210.11, 18,229.19 and 7,904.88 is: 10,908.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.11 : 18,229.19 = 7,904.88 : x
  2. Step 2: Convert to fraction form
    13,210.11/18,229.19 = 7,904.88/x
  3. Step 3: Cross multiply
    13,210.11x = 18,229.19 × 7,904.88
  4. Step 4: Simplify right side
    13,210.11x = 144,099,519.92
  5. Step 5: Solve for x
    x = 144,099,519.92/13,210.11
  6. Step 6: Final answer
    x = 10,908.28

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Double scale
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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.