Home / 13,220.18-18,243.67-7,554.86

Finding the Fourth Proportional to 13,220.18, 18,243.67 and 7,554.86

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Solution

The fourth proportional to 13,220.18, 18,243.67 and 7,554.86 is: 10,425.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.18 : 18,243.67 = 7,554.86 : x
  2. Step 2: Convert to fraction form
    13,220.18/18,243.67 = 7,554.86/x
  3. Step 3: Cross multiply
    13,220.18x = 18,243.67 × 7,554.86
  4. Step 4: Simplify right side
    13,220.18x = 137,828,372.74
  5. Step 5: Solve for x
    x = 137,828,372.74/13,220.18
  6. Step 6: Final answer
    x = 10,425.61

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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.