Home / 13,211.96-18,232.58-7,243.70

Finding the Fourth Proportional to 13,211.96, 18,232.58 and 7,243.70

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Solution

The fourth proportional to 13,211.96, 18,232.58 and 7,243.70 is: 9,996.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.96 : 18,232.58 = 7,243.70 : x
  2. Step 2: Convert to fraction form
    13,211.96/18,232.58 = 7,243.70/x
  3. Step 3: Cross multiply
    13,211.96x = 18,232.58 × 7,243.70
  4. Step 4: Simplify right side
    13,211.96x = 132,071,266.69
  5. Step 5: Solve for x
    x = 132,071,266.69/13,211.96
  6. Step 6: Final answer
    x = 9,996.35

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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.