Home / 13,365.96-18,445.32-8,658.42

Finding the Fourth Proportional to 13,365.96, 18,445.32 and 8,658.42

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Solution

The fourth proportional to 13,365.96, 18,445.32 and 8,658.42 is: 11,948.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,365.96 : 18,445.32 = 8,658.42 : x
  2. Step 2: Convert to fraction form
    13,365.96/18,445.32 = 8,658.42/x
  3. Step 3: Cross multiply
    13,365.96x = 18,445.32 × 8,658.42
  4. Step 4: Simplify right side
    13,365.96x = 159,707,327.59
  5. Step 5: Solve for x
    x = 159,707,327.59/13,365.96
  6. Step 6: Final answer
    x = 11,948.81

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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.