Home / 13,239.84-18,270.90-7,650.84

Finding the Fourth Proportional to 13,239.84, 18,270.90 and 7,650.84

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Solution

The fourth proportional to 13,239.84, 18,270.90 and 7,650.84 is: 10,558.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.84 : 18,270.90 = 7,650.84 : x
  2. Step 2: Convert to fraction form
    13,239.84/18,270.90 = 7,650.84/x
  3. Step 3: Cross multiply
    13,239.84x = 18,270.90 × 7,650.84
  4. Step 4: Simplify right side
    13,239.84x = 139,787,732.56
  5. Step 5: Solve for x
    x = 139,787,732.56/13,239.84
  6. Step 6: Final answer
    x = 10,558.11

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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.