Home / 13,103.24-18,100.85-11,686.47

Finding the Fourth Proportional to 13,103.24, 18,100.85 and 11,686.47

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Solution

The fourth proportional to 13,103.24, 18,100.85 and 11,686.47 is: 16,143.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.24 : 18,100.85 = 11,686.47 : x
  2. Step 2: Convert to fraction form
    13,103.24/18,100.85 = 11,686.47/x
  3. Step 3: Cross multiply
    13,103.24x = 18,100.85 × 11,686.47
  4. Step 4: Simplify right side
    13,103.24x = 211,534,982.07
  5. Step 5: Solve for x
    x = 211,534,982.07/13,103.24
  6. Step 6: Final answer
    x = 16,143.72

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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.