Home / 13,691.39-18,894.10-7,403.75

Finding the Fourth Proportional to 13,691.39, 18,894.10 and 7,403.75

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Solution

The fourth proportional to 13,691.39, 18,894.10 and 7,403.75 is: 10,217.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.39 : 18,894.10 = 7,403.75 : x
  2. Step 2: Convert to fraction form
    13,691.39/18,894.10 = 7,403.75/x
  3. Step 3: Cross multiply
    13,691.39x = 18,894.10 × 7,403.75
  4. Step 4: Simplify right side
    13,691.39x = 139,887,192.88
  5. Step 5: Solve for x
    x = 139,887,192.88/13,691.39
  6. Step 6: Final answer
    x = 10,217.17

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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.