Home / 13,269.88-18,323.58-9,090.28

Finding the Fourth Proportional to 13,269.88, 18,323.58 and 9,090.28

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Solution

The fourth proportional to 13,269.88, 18,323.58 and 9,090.28 is: 12,552.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,269.88 : 18,323.58 = 9,090.28 : x
  2. Step 2: Convert to fraction form
    13,269.88/18,323.58 = 9,090.28/x
  3. Step 3: Cross multiply
    13,269.88x = 18,323.58 × 9,090.28
  4. Step 4: Simplify right side
    13,269.88x = 166,566,472.80
  5. Step 5: Solve for x
    x = 166,566,472.80/13,269.88
  6. Step 6: Final answer
    x = 12,552.22

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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.