Home / 13,135.62-18,127.36-7,470.22

Finding the Fourth Proportional to 13,135.62, 18,127.36 and 7,470.22

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Solution

The fourth proportional to 13,135.62, 18,127.36 and 7,470.22 is: 10,309.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.62 : 18,127.36 = 7,470.22 : x
  2. Step 2: Convert to fraction form
    13,135.62/18,127.36 = 7,470.22/x
  3. Step 3: Cross multiply
    13,135.62x = 18,127.36 × 7,470.22
  4. Step 4: Simplify right side
    13,135.62x = 135,415,367.22
  5. Step 5: Solve for x
    x = 135,415,367.22/13,135.62
  6. Step 6: Final answer
    x = 10,309.02

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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.