Home / 13,391.10-18,480.33-7,423.74

Finding the Fourth Proportional to 13,391.10, 18,480.33 and 7,423.74

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Solution

The fourth proportional to 13,391.10, 18,480.33 and 7,423.74 is: 10,245.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.10 : 18,480.33 = 7,423.74 : x
  2. Step 2: Convert to fraction form
    13,391.10/18,480.33 = 7,423.74/x
  3. Step 3: Cross multiply
    13,391.10x = 18,480.33 × 7,423.74
  4. Step 4: Simplify right side
    13,391.10x = 137,193,165.03
  5. Step 5: Solve for x
    x = 137,193,165.03/13,391.10
  6. Step 6: Final answer
    x = 10,245.10

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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.