Home / 13,175.28-19,778.28-10,403.80

Finding the Fourth Proportional to 13,175.28, 19,778.28 and 10,403.80

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Solution

The fourth proportional to 13,175.28, 19,778.28 and 10,403.80 is: 15,617.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,175.28 : 19,778.28 = 10,403.80 : x
  2. Step 2: Convert to fraction form
    13,175.28/19,778.28 = 10,403.80/x
  3. Step 3: Cross multiply
    13,175.28x = 19,778.28 × 10,403.80
  4. Step 4: Simplify right side
    13,175.28x = 205,769,269.46
  5. Step 5: Solve for x
    x = 205,769,269.46/13,175.28
  6. Step 6: Final answer
    x = 15,617.83

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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.