Home / 13,371.05-18,450.51-7,402.70

Finding the Fourth Proportional to 13,371.05, 18,450.51 and 7,402.70

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Solution

The fourth proportional to 13,371.05, 18,450.51 and 7,402.70 is: 10,214.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.05 : 18,450.51 = 7,402.70 : x
  2. Step 2: Convert to fraction form
    13,371.05/18,450.51 = 7,402.70/x
  3. Step 3: Cross multiply
    13,371.05x = 18,450.51 × 7,402.70
  4. Step 4: Simplify right side
    13,371.05x = 136,583,590.38
  5. Step 5: Solve for x
    x = 136,583,590.38/13,371.05
  6. Step 6: Final answer
    x = 10,214.87

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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.