Home / 15,207.55-20,985.21-8,492.78

Finding the Fourth Proportional to 15,207.55, 20,985.21 and 8,492.78

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Solution

The fourth proportional to 15,207.55, 20,985.21 and 8,492.78 is: 11,719.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,207.55 : 20,985.21 = 8,492.78 : x
  2. Step 2: Convert to fraction form
    15,207.55/20,985.21 = 8,492.78/x
  3. Step 3: Cross multiply
    15,207.55x = 20,985.21 × 8,492.78
  4. Step 4: Simplify right side
    15,207.55x = 178,222,771.78
  5. Step 5: Solve for x
    x = 178,222,771.78/15,207.55
  6. Step 6: Final answer
    x = 11,719.36

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Similar ratio
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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.