Home / 13,072.20-18,039.57-7,406.93

Finding the Fourth Proportional to 13,072.20, 18,039.57 and 7,406.93

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Solution

The fourth proportional to 13,072.20, 18,039.57 and 7,406.93 is: 10,221.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,072.20 : 18,039.57 = 7,406.93 : x
  2. Step 2: Convert to fraction form
    13,072.20/18,039.57 = 7,406.93/x
  3. Step 3: Cross multiply
    13,072.20x = 18,039.57 × 7,406.93
  4. Step 4: Simplify right side
    13,072.20x = 133,617,832.22
  5. Step 5: Solve for x
    x = 133,617,832.22/13,072.20
  6. Step 6: Final answer
    x = 10,221.53

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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.