Home / 12,165.80-18,220.34-9,370.28

Finding the Fourth Proportional to 12,165.80, 18,220.34 and 9,370.28

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Solution

The fourth proportional to 12,165.80, 18,220.34 and 9,370.28 is: 14,033.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,165.80 : 18,220.34 = 9,370.28 : x
  2. Step 2: Convert to fraction form
    12,165.80/18,220.34 = 9,370.28/x
  3. Step 3: Cross multiply
    12,165.80x = 18,220.34 × 9,370.28
  4. Step 4: Simplify right side
    12,165.80x = 170,729,756.47
  5. Step 5: Solve for x
    x = 170,729,756.47/12,165.80
  6. Step 6: Final answer
    x = 14,033.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.