Home / 13,184.89-18,190.62-7,515.55

Finding the Fourth Proportional to 13,184.89, 18,190.62 and 7,515.55

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Solution

The fourth proportional to 13,184.89, 18,190.62 and 7,515.55 is: 10,368.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,184.89 : 18,190.62 = 7,515.55 : x
  2. Step 2: Convert to fraction form
    13,184.89/18,190.62 = 7,515.55/x
  3. Step 3: Cross multiply
    13,184.89x = 18,190.62 × 7,515.55
  4. Step 4: Simplify right side
    13,184.89x = 136,712,514.14
  5. Step 5: Solve for x
    x = 136,712,514.14/13,184.89
  6. Step 6: Final answer
    x = 10,368.88

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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.