Home / 12,824.10-19,236.15-7,812.90

Finding the Fourth Proportional to 12,824.10, 19,236.15 and 7,812.90

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Solution

The fourth proportional to 12,824.10, 19,236.15 and 7,812.90 is: 11,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,824.10 : 19,236.15 = 7,812.90 : x
  2. Step 2: Convert to fraction form
    12,824.10/19,236.15 = 7,812.90/x
  3. Step 3: Cross multiply
    12,824.10x = 19,236.15 × 7,812.90
  4. Step 4: Simplify right side
    12,824.10x = 150,290,116.34
  5. Step 5: Solve for x
    x = 150,290,116.34/12,824.10
  6. Step 6: Final answer
    x = 11,719.35

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.