Home / 13,320.05-18,381.20-7,351.29

Finding the Fourth Proportional to 13,320.05, 18,381.20 and 7,351.29

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Solution

The fourth proportional to 13,320.05, 18,381.20 and 7,351.29 is: 10,144.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.05 : 18,381.20 = 7,351.29 : x
  2. Step 2: Convert to fraction form
    13,320.05/18,381.20 = 7,351.29/x
  3. Step 3: Cross multiply
    13,320.05x = 18,381.20 × 7,351.29
  4. Step 4: Simplify right side
    13,320.05x = 135,125,494.99
  5. Step 5: Solve for x
    x = 135,125,494.99/13,320.05
  6. Step 6: Final answer
    x = 10,144.52

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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.