Home / 13,340.06-18,409.28-7,371.68

Finding the Fourth Proportional to 13,340.06, 18,409.28 and 7,371.68

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Solution

The fourth proportional to 13,340.06, 18,409.28 and 7,371.68 is: 10,172.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.06 : 18,409.28 = 7,371.68 : x
  2. Step 2: Convert to fraction form
    13,340.06/18,409.28 = 7,371.68/x
  3. Step 3: Cross multiply
    13,340.06x = 18,409.28 × 7,371.68
  4. Step 4: Simplify right side
    13,340.06x = 135,707,192.29
  5. Step 5: Solve for x
    x = 135,707,192.29/13,340.06
  6. Step 6: Final answer
    x = 10,172.91

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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.