Home / 13,130.24-18,105.96-8,648.26

Finding the Fourth Proportional to 13,130.24, 18,105.96 and 8,648.26

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Solution

The fourth proportional to 13,130.24, 18,105.96 and 8,648.26 is: 11,925.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.24 : 18,105.96 = 8,648.26 : x
  2. Step 2: Convert to fraction form
    13,130.24/18,105.96 = 8,648.26/x
  3. Step 3: Cross multiply
    13,130.24x = 18,105.96 × 8,648.26
  4. Step 4: Simplify right side
    13,130.24x = 156,585,049.63
  5. Step 5: Solve for x
    x = 156,585,049.63/13,130.24
  6. Step 6: Final answer
    x = 11,925.53

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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.