Home / 13,228.35-18,255.78-7,259.96

Finding the Fourth Proportional to 13,228.35, 18,255.78 and 7,259.96

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Solution

The fourth proportional to 13,228.35, 18,255.78 and 7,259.96 is: 10,019.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.35 : 18,255.78 = 7,259.96 : x
  2. Step 2: Convert to fraction form
    13,228.35/18,255.78 = 7,259.96/x
  3. Step 3: Cross multiply
    13,228.35x = 18,255.78 × 7,259.96
  4. Step 4: Simplify right side
    13,228.35x = 132,536,278.21
  5. Step 5: Solve for x
    x = 132,536,278.21/13,228.35
  6. Step 6: Final answer
    x = 10,019.11

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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.