Home / 13,683.48-18,885.11-8,308.59

Finding the Fourth Proportional to 13,683.48, 18,885.11 and 8,308.59

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Solution

The fourth proportional to 13,683.48, 18,885.11 and 8,308.59 is: 11,467.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,683.48 : 18,885.11 = 8,308.59 : x
  2. Step 2: Convert to fraction form
    13,683.48/18,885.11 = 8,308.59/x
  3. Step 3: Cross multiply
    13,683.48x = 18,885.11 × 8,308.59
  4. Step 4: Simplify right side
    13,683.48x = 156,908,636.09
  5. Step 5: Solve for x
    x = 156,908,636.09/13,683.48
  6. Step 6: Final answer
    x = 11,467.01

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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.