Home / 13,220.34-18,243.96-7,251.87

Finding the Fourth Proportional to 13,220.34, 18,243.96 and 7,251.87

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Solution

The fourth proportional to 13,220.34, 18,243.96 and 7,251.87 is: 10,007.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.34 : 18,243.96 = 7,251.87 : x
  2. Step 2: Convert to fraction form
    13,220.34/18,243.96 = 7,251.87/x
  3. Step 3: Cross multiply
    13,220.34x = 18,243.96 × 7,251.87
  4. Step 4: Simplify right side
    13,220.34x = 132,302,826.21
  5. Step 5: Solve for x
    x = 132,302,826.21/13,220.34
  6. Step 6: Final answer
    x = 10,007.52

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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.