Home / 13,076.80-18,015.46-9,090.98

Finding the Fourth Proportional to 13,076.80, 18,015.46 and 9,090.98

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Solution

The fourth proportional to 13,076.80, 18,015.46 and 9,090.98 is: 12,524.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,076.80 : 18,015.46 = 9,090.98 : x
  2. Step 2: Convert to fraction form
    13,076.80/18,015.46 = 9,090.98/x
  3. Step 3: Cross multiply
    13,076.80x = 18,015.46 × 9,090.98
  4. Step 4: Simplify right side
    13,076.80x = 163,778,186.55
  5. Step 5: Solve for x
    x = 163,778,186.55/13,076.80
  6. Step 6: Final answer
    x = 12,524.33

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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.