Home / 13,391.43-18,479.49-7,423.03

Finding the Fourth Proportional to 13,391.43, 18,479.49 and 7,423.03

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Solution

The fourth proportional to 13,391.43, 18,479.49 and 7,423.03 is: 10,243.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.43 : 18,479.49 = 7,423.03 : x
  2. Step 2: Convert to fraction form
    13,391.43/18,479.49 = 7,423.03/x
  3. Step 3: Cross multiply
    13,391.43x = 18,479.49 × 7,423.03
  4. Step 4: Simplify right side
    13,391.43x = 137,173,808.65
  5. Step 5: Solve for x
    x = 137,173,808.65/13,391.43
  6. Step 6: Final answer
    x = 10,243.40

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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.