Home / 13,309.03-18,366.37-7,340.57

Finding the Fourth Proportional to 13,309.03, 18,366.37 and 7,340.57

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Solution

The fourth proportional to 13,309.03, 18,366.37 and 7,340.57 is: 10,129.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.03 : 18,366.37 = 7,340.57 : x
  2. Step 2: Convert to fraction form
    13,309.03/18,366.37 = 7,340.57/x
  3. Step 3: Cross multiply
    13,309.03x = 18,366.37 × 7,340.57
  4. Step 4: Simplify right side
    13,309.03x = 134,819,514.45
  5. Step 5: Solve for x
    x = 134,819,514.45/13,309.03
  6. Step 6: Final answer
    x = 10,129.93

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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.