Home / 13,375.02-18,456.03-7,405.19

Finding the Fourth Proportional to 13,375.02, 18,456.03 and 7,405.19

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Solution

The fourth proportional to 13,375.02, 18,456.03 and 7,405.19 is: 10,218.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,375.02 : 18,456.03 = 7,405.19 : x
  2. Step 2: Convert to fraction form
    13,375.02/18,456.03 = 7,405.19/x
  3. Step 3: Cross multiply
    13,375.02x = 18,456.03 × 7,405.19
  4. Step 4: Simplify right side
    13,375.02x = 136,670,408.80
  5. Step 5: Solve for x
    x = 136,670,408.80/13,375.02
  6. Step 6: Final answer
    x = 10,218.33

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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.