Home / 13,686.27-18,883.80-8,308.58

Finding the Fourth Proportional to 13,686.27, 18,883.80 and 8,308.58

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Solution

The fourth proportional to 13,686.27, 18,883.80 and 8,308.58 is: 11,463.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.27 : 18,883.80 = 8,308.58 : x
  2. Step 2: Convert to fraction form
    13,686.27/18,883.80 = 8,308.58/x
  3. Step 3: Cross multiply
    13,686.27x = 18,883.80 × 8,308.58
  4. Step 4: Simplify right side
    13,686.27x = 156,897,563.00
  5. Step 5: Solve for x
    x = 156,897,563.00/13,686.27
  6. Step 6: Final answer
    x = 11,463.87

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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.