Home / 13,426.38-20,139.75-4,661.55

Finding the Fourth Proportional to 13,426.38, 20,139.75 and 4,661.55

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Solution

The fourth proportional to 13,426.38, 20,139.75 and 4,661.55 is: 6,992.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.38 : 20,139.75 = 4,661.55 : x
  2. Step 2: Convert to fraction form
    13,426.38/20,139.75 = 4,661.55/x
  3. Step 3: Cross multiply
    13,426.38x = 20,139.75 × 4,661.55
  4. Step 4: Simplify right side
    13,426.38x = 93,882,451.61
  5. Step 5: Solve for x
    x = 93,882,451.61/13,426.38
  6. Step 6: Final answer
    x = 6,992.39

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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.