Home / 13,369.05-18,447.75-7,400.70

Finding the Fourth Proportional to 13,369.05, 18,447.75 and 7,400.70

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Solution

The fourth proportional to 13,369.05, 18,447.75 and 7,400.70 is: 10,212.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,369.05 : 18,447.75 = 7,400.70 : x
  2. Step 2: Convert to fraction form
    13,369.05/18,447.75 = 7,400.70/x
  3. Step 3: Cross multiply
    13,369.05x = 18,447.75 × 7,400.70
  4. Step 4: Simplify right side
    13,369.05x = 136,526,263.43
  5. Step 5: Solve for x
    x = 136,526,263.43/13,369.05
  6. Step 6: Final answer
    x = 10,212.11

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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.