Home / 13,685.27-18,882.42-8,307.58

Finding the Fourth Proportional to 13,685.27, 18,882.42 and 8,307.58

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Solution

The fourth proportional to 13,685.27, 18,882.42 and 8,307.58 is: 11,462.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.27 : 18,882.42 = 8,307.58 : x
  2. Step 2: Convert to fraction form
    13,685.27/18,882.42 = 8,307.58/x
  3. Step 3: Cross multiply
    13,685.27x = 18,882.42 × 8,307.58
  4. Step 4: Simplify right side
    13,685.27x = 156,867,171.79
  5. Step 5: Solve for x
    x = 156,867,171.79/13,685.27
  6. Step 6: Final answer
    x = 11,462.48

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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.