Home / 13,207.20-18,225.91-7,618.20

Finding the Fourth Proportional to 13,207.20, 18,225.91 and 7,618.20

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Solution

The fourth proportional to 13,207.20, 18,225.91 and 7,618.20 is: 10,513.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.20 : 18,225.91 = 7,618.20 : x
  2. Step 2: Convert to fraction form
    13,207.20/18,225.91 = 7,618.20/x
  3. Step 3: Cross multiply
    13,207.20x = 18,225.91 × 7,618.20
  4. Step 4: Simplify right side
    13,207.20x = 138,848,627.56
  5. Step 5: Solve for x
    x = 138,848,627.56/13,207.20
  6. Step 6: Final answer
    x = 10,513.10

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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.