Home / 19,894.57-27,455.13-10,942.72

Finding the Fourth Proportional to 19,894.57, 27,455.13 and 10,942.72

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Solution

The fourth proportional to 19,894.57, 27,455.13 and 10,942.72 is: 15,101.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,894.57 : 27,455.13 = 10,942.72 : x
  2. Step 2: Convert to fraction form
    19,894.57/27,455.13 = 10,942.72/x
  3. Step 3: Cross multiply
    19,894.57x = 27,455.13 × 10,942.72
  4. Step 4: Simplify right side
    19,894.57x = 300,433,800.15
  5. Step 5: Solve for x
    x = 300,433,800.15/19,894.57
  6. Step 6: Final answer
    x = 15,101.30

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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.