Home / 13,919.47-20,884.68-6,122.81

Finding the Fourth Proportional to 13,919.47, 20,884.68 and 6,122.81

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Solution

The fourth proportional to 13,919.47, 20,884.68 and 6,122.81 is: 9,186.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.47 : 20,884.68 = 6,122.81 : x
  2. Step 2: Convert to fraction form
    13,919.47/20,884.68 = 6,122.81/x
  3. Step 3: Cross multiply
    13,919.47x = 20,884.68 × 6,122.81
  4. Step 4: Simplify right side
    13,919.47x = 127,872,979.76
  5. Step 5: Solve for x
    x = 127,872,979.76/13,919.47
  6. Step 6: Final answer
    x = 9,186.63

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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.