Home / 12,090.47-18,135.70-3,325.46

Finding the Fourth Proportional to 12,090.47, 18,135.70 and 3,325.46

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Solution

The fourth proportional to 12,090.47, 18,135.70 and 3,325.46 is: 4,988.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.47 : 18,135.70 = 3,325.46 : x
  2. Step 2: Convert to fraction form
    12,090.47/18,135.70 = 3,325.46/x
  3. Step 3: Cross multiply
    12,090.47x = 18,135.70 × 3,325.46
  4. Step 4: Simplify right side
    12,090.47x = 60,309,445.93
  5. Step 5: Solve for x
    x = 60,309,445.93/12,090.47
  6. Step 6: Final answer
    x = 4,988.18

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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.