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Finding the Fourth Proportional to 12,508.64, 18,763 and 5,113.10

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Solution

The fourth proportional to 12,508.64, 18,763 and 5,113.10 is: 7,669.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.64 : 18,763 = 5,113.10 : x
  2. Step 2: Convert to fraction form
    12,508.64/18,763 = 5,113.10/x
  3. Step 3: Cross multiply
    12,508.64x = 18,763 × 5,113.10
  4. Step 4: Simplify right side
    12,508.64x = 95,937,095.30
  5. Step 5: Solve for x
    x = 95,937,095.30/12,508.64
  6. Step 6: Final answer
    x = 7,669.67

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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.