Home / 13,727.15-18,942.95-7,439.39

Finding the Fourth Proportional to 13,727.15, 18,942.95 and 7,439.39

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Solution

The fourth proportional to 13,727.15, 18,942.95 and 7,439.39 is: 10,266.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,727.15 : 18,942.95 = 7,439.39 : x
  2. Step 2: Convert to fraction form
    13,727.15/18,942.95 = 7,439.39/x
  3. Step 3: Cross multiply
    13,727.15x = 18,942.95 × 7,439.39
  4. Step 4: Simplify right side
    13,727.15x = 140,923,916.68
  5. Step 5: Solve for x
    x = 140,923,916.68/13,727.15
  6. Step 6: Final answer
    x = 10,266.08

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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.