Home / 13,133.62-18,122.13-7,390.27

Finding the Fourth Proportional to 13,133.62, 18,122.13 and 7,390.27

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Solution

The fourth proportional to 13,133.62, 18,122.13 and 7,390.27 is: 10,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,133.62 : 18,122.13 = 7,390.27 : x
  2. Step 2: Convert to fraction form
    13,133.62/18,122.13 = 7,390.27/x
  3. Step 3: Cross multiply
    13,133.62x = 18,122.13 × 7,390.27
  4. Step 4: Simplify right side
    13,133.62x = 133,927,433.68
  5. Step 5: Solve for x
    x = 133,927,433.68/13,133.62
  6. Step 6: Final answer
    x = 10,197.30

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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.