Home / 12,090.28-18,143.14-5,164.76

Finding the Fourth Proportional to 12,090.28, 18,143.14 and 5,164.76

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Solution

The fourth proportional to 12,090.28, 18,143.14 and 5,164.76 is: 7,750.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.28 : 18,143.14 = 5,164.76 : x
  2. Step 2: Convert to fraction form
    12,090.28/18,143.14 = 5,164.76/x
  3. Step 3: Cross multiply
    12,090.28x = 18,143.14 × 5,164.76
  4. Step 4: Simplify right side
    12,090.28x = 93,704,963.75
  5. Step 5: Solve for x
    x = 93,704,963.75/12,090.28
  6. Step 6: Final answer
    x = 7,750.44

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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.