Home / 12,345.24-18,508.15-5,764.80

Finding the Fourth Proportional to 12,345.24, 18,508.15 and 5,764.80

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Solution

The fourth proportional to 12,345.24, 18,508.15 and 5,764.80 is: 8,642.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.24 : 18,508.15 = 5,764.80 : x
  2. Step 2: Convert to fraction form
    12,345.24/18,508.15 = 5,764.80/x
  3. Step 3: Cross multiply
    12,345.24x = 18,508.15 × 5,764.80
  4. Step 4: Simplify right side
    12,345.24x = 106,695,827.30
  5. Step 5: Solve for x
    x = 106,695,827.30/12,345.24
  6. Step 6: Final answer
    x = 8,642.67

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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.