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Finding the Fourth Proportional to 12,540.76, 18,808.76 and 6,299.10

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Solution

The fourth proportional to 12,540.76, 18,808.76 and 6,299.10 is: 9,447.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540.76 : 18,808.76 = 6,299.10 : x
  2. Step 2: Convert to fraction form
    12,540.76/18,808.76 = 6,299.10/x
  3. Step 3: Cross multiply
    12,540.76x = 18,808.76 × 6,299.10
  4. Step 4: Simplify right side
    12,540.76x = 118,478,260.12
  5. Step 5: Solve for x
    x = 118,478,260.12/12,540.76
  6. Step 6: Final answer
    x = 9,447.45

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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.