Home / 13,239.18-18,269.73-7,650.18

Finding the Fourth Proportional to 13,239.18, 18,269.73 and 7,650.18

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Solution

The fourth proportional to 13,239.18, 18,269.73 and 7,650.18 is: 10,557.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.18 : 18,269.73 = 7,650.18 : x
  2. Step 2: Convert to fraction form
    13,239.18/18,269.73 = 7,650.18/x
  3. Step 3: Cross multiply
    13,239.18x = 18,269.73 × 7,650.18
  4. Step 4: Simplify right side
    13,239.18x = 139,766,723.05
  5. Step 5: Solve for x
    x = 139,766,723.05/13,239.18
  6. Step 6: Final answer
    x = 10,557.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.