Home / 13,691.43-18,894.20-7,403.81

Finding the Fourth Proportional to 13,691.43, 18,894.20 and 7,403.81

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Solution

The fourth proportional to 13,691.43, 18,894.20 and 7,403.81 is: 10,217.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.43 : 18,894.20 = 7,403.81 : x
  2. Step 2: Convert to fraction form
    13,691.43/18,894.20 = 7,403.81/x
  3. Step 3: Cross multiply
    13,691.43x = 18,894.20 × 7,403.81
  4. Step 4: Simplify right side
    13,691.43x = 139,888,935.41
  5. Step 5: Solve for x
    x = 139,888,935.41/13,691.43
  6. Step 6: Final answer
    x = 10,217.26

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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.