Home / 13,391.74-18,479.37-7,423.12

Finding the Fourth Proportional to 13,391.74, 18,479.37 and 7,423.12

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Solution

The fourth proportional to 13,391.74, 18,479.37 and 7,423.12 is: 10,243.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.74 : 18,479.37 = 7,423.12 : x
  2. Step 2: Convert to fraction form
    13,391.74/18,479.37 = 7,423.12/x
  3. Step 3: Cross multiply
    13,391.74x = 18,479.37 × 7,423.12
  4. Step 4: Simplify right side
    13,391.74x = 137,174,581.03
  5. Step 5: Solve for x
    x = 137,174,581.03/13,391.74
  6. Step 6: Final answer
    x = 10,243.22

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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.