Home / 13,140.36-19,708.41-3,778.23

Finding the Fourth Proportional to 13,140.36, 19,708.41 and 3,778.23

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Solution

The fourth proportional to 13,140.36, 19,708.41 and 3,778.23 is: 5,666.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.36 : 19,708.41 = 3,778.23 : x
  2. Step 2: Convert to fraction form
    13,140.36/19,708.41 = 3,778.23/x
  3. Step 3: Cross multiply
    13,140.36x = 19,708.41 × 3,778.23
  4. Step 4: Simplify right side
    13,140.36x = 74,462,905.91
  5. Step 5: Solve for x
    x = 74,462,905.91/13,140.36
  6. Step 6: Final answer
    x = 5,666.73

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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.