Home / 13,661.29-18,850.57-7,691.77

Finding the Fourth Proportional to 13,661.29, 18,850.57 and 7,691.77

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Solution

The fourth proportional to 13,661.29, 18,850.57 and 7,691.77 is: 10,613.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.29 : 18,850.57 = 7,691.77 : x
  2. Step 2: Convert to fraction form
    13,661.29/18,850.57 = 7,691.77/x
  3. Step 3: Cross multiply
    13,661.29x = 18,850.57 × 7,691.77
  4. Step 4: Simplify right side
    13,661.29x = 144,994,248.81
  5. Step 5: Solve for x
    x = 144,994,248.81/13,661.29
  6. Step 6: Final answer
    x = 10,613.51

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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.