Home / 13,228.91-18,255.88-7,260.59

Finding the Fourth Proportional to 13,228.91, 18,255.88 and 7,260.59

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Solution

The fourth proportional to 13,228.91, 18,255.88 and 7,260.59 is: 10,019.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.91 : 18,255.88 = 7,260.59 : x
  2. Step 2: Convert to fraction form
    13,228.91/18,255.88 = 7,260.59/x
  3. Step 3: Cross multiply
    13,228.91x = 18,255.88 × 7,260.59
  4. Step 4: Simplify right side
    13,228.91x = 132,548,459.77
  5. Step 5: Solve for x
    x = 132,548,459.77/13,228.91
  6. Step 6: Final answer
    x = 10,019.61

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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.