Home / 13,243.08-18,281.25-8,469.30

Finding the Fourth Proportional to 13,243.08, 18,281.25 and 8,469.30

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Solution

The fourth proportional to 13,243.08, 18,281.25 and 8,469.30 is: 11,691.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,243.08 : 18,281.25 = 8,469.30 : x
  2. Step 2: Convert to fraction form
    13,243.08/18,281.25 = 8,469.30/x
  3. Step 3: Cross multiply
    13,243.08x = 18,281.25 × 8,469.30
  4. Step 4: Simplify right side
    13,243.08x = 154,829,390.63
  5. Step 5: Solve for x
    x = 154,829,390.63/13,243.08
  6. Step 6: Final answer
    x = 11,691.34

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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.