Home / 13,339.53-18,406.58-7,371.45

Finding the Fourth Proportional to 13,339.53, 18,406.58 and 7,371.45

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Solution

The fourth proportional to 13,339.53, 18,406.58 and 7,371.45 is: 10,171.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.53 : 18,406.58 = 7,371.45 : x
  2. Step 2: Convert to fraction form
    13,339.53/18,406.58 = 7,371.45/x
  3. Step 3: Cross multiply
    13,339.53x = 18,406.58 × 7,371.45
  4. Step 4: Simplify right side
    13,339.53x = 135,683,147.28
  5. Step 5: Solve for x
    x = 135,683,147.28/13,339.53
  6. Step 6: Final answer
    x = 10,171.51

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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.