Home / 13,339.70-18,409.16-7,371.75

Finding the Fourth Proportional to 13,339.70, 18,409.16 and 7,371.75

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Solution

The fourth proportional to 13,339.70, 18,409.16 and 7,371.75 is: 10,173.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.70 : 18,409.16 = 7,371.75 : x
  2. Step 2: Convert to fraction form
    13,339.70/18,409.16 = 7,371.75/x
  3. Step 3: Cross multiply
    13,339.70x = 18,409.16 × 7,371.75
  4. Step 4: Simplify right side
    13,339.70x = 135,707,688.37
  5. Step 5: Solve for x
    x = 135,707,688.37/13,339.70
  6. Step 6: Final answer
    x = 10,173.22

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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.