Home / 13,229.10-18,256.14-7,260.78

Finding the Fourth Proportional to 13,229.10, 18,256.14 and 7,260.78

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Solution

The fourth proportional to 13,229.10, 18,256.14 and 7,260.78 is: 10,019.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,229.10 : 18,256.14 = 7,260.78 : x
  2. Step 2: Convert to fraction form
    13,229.10/18,256.14 = 7,260.78/x
  3. Step 3: Cross multiply
    13,229.10x = 18,256.14 × 7,260.78
  4. Step 4: Simplify right side
    13,229.10x = 132,553,816.19
  5. Step 5: Solve for x
    x = 132,553,816.19/13,229.10
  6. Step 6: Final answer
    x = 10,019.87

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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.