Home / 12,243.05-18,347.39-5,213.55

Finding the Fourth Proportional to 12,243.05, 18,347.39 and 5,213.55

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Solution

The fourth proportional to 12,243.05, 18,347.39 and 5,213.55 is: 7,813.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243.05 : 18,347.39 = 5,213.55 : x
  2. Step 2: Convert to fraction form
    12,243.05/18,347.39 = 5,213.55/x
  3. Step 3: Cross multiply
    12,243.05x = 18,347.39 × 5,213.55
  4. Step 4: Simplify right side
    12,243.05x = 95,655,035.13
  5. Step 5: Solve for x
    x = 95,655,035.13/12,243.05
  6. Step 6: Final answer
    x = 7,813.01

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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.