Home / 13,438.04-18,542.28-7,469.56

Finding the Fourth Proportional to 13,438.04, 18,542.28 and 7,469.56

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Solution

The fourth proportional to 13,438.04, 18,542.28 and 7,469.56 is: 10,306.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,438.04 : 18,542.28 = 7,469.56 : x
  2. Step 2: Convert to fraction form
    13,438.04/18,542.28 = 7,469.56/x
  3. Step 3: Cross multiply
    13,438.04x = 18,542.28 × 7,469.56
  4. Step 4: Simplify right side
    13,438.04x = 138,502,673.00
  5. Step 5: Solve for x
    x = 138,502,673.00/13,438.04
  6. Step 6: Final answer
    x = 10,306.76

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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.