Home / 13,426.61-20,128.37-4,660.38

Finding the Fourth Proportional to 13,426.61, 20,128.37 and 4,660.38

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Solution

The fourth proportional to 13,426.61, 20,128.37 and 4,660.38 is: 6,986.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.61 : 20,128.37 = 4,660.38 : x
  2. Step 2: Convert to fraction form
    13,426.61/20,128.37 = 4,660.38/x
  3. Step 3: Cross multiply
    13,426.61x = 20,128.37 × 4,660.38
  4. Step 4: Simplify right side
    13,426.61x = 93,805,829.68
  5. Step 5: Solve for x
    x = 93,805,829.68/13,426.61
  6. Step 6: Final answer
    x = 6,986.56

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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.