Home / 12,545.19-18,810.50-4,749.75

Finding the Fourth Proportional to 12,545.19, 18,810.50 and 4,749.75

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Solution

The fourth proportional to 12,545.19, 18,810.50 and 4,749.75 is: 7,121.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.19 : 18,810.50 = 4,749.75 : x
  2. Step 2: Convert to fraction form
    12,545.19/18,810.50 = 4,749.75/x
  3. Step 3: Cross multiply
    12,545.19x = 18,810.50 × 4,749.75
  4. Step 4: Simplify right side
    12,545.19x = 89,345,148.63
  5. Step 5: Solve for x
    x = 89,345,148.63/12,545.19
  6. Step 6: Final answer
    x = 7,121.86

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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.