Home / 13,391.79-18,467.85-8,013.30

Finding the Fourth Proportional to 13,391.79, 18,467.85 and 8,013.30

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Solution

The fourth proportional to 13,391.79, 18,467.85 and 8,013.30 is: 11,050.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.79 : 18,467.85 = 8,013.30 : x
  2. Step 2: Convert to fraction form
    13,391.79/18,467.85 = 8,013.30/x
  3. Step 3: Cross multiply
    13,391.79x = 18,467.85 × 8,013.30
  4. Step 4: Simplify right side
    13,391.79x = 147,988,493.95
  5. Step 5: Solve for x
    x = 147,988,493.95/13,391.79
  6. Step 6: Final answer
    x = 11,050.69

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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.