Home / 20,272.19-30,409.91-7,127.51

Finding the Fourth Proportional to 20,272.19, 30,409.91 and 7,127.51

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Solution

The fourth proportional to 20,272.19, 30,409.91 and 7,127.51 is: 10,691.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.19 : 30,409.91 = 7,127.51 : x
  2. Step 2: Convert to fraction form
    20,272.19/30,409.91 = 7,127.51/x
  3. Step 3: Cross multiply
    20,272.19x = 30,409.91 × 7,127.51
  4. Step 4: Simplify right side
    20,272.19x = 216,746,749.94
  5. Step 5: Solve for x
    x = 216,746,749.94/20,272.19
  6. Step 6: Final answer
    x = 10,691.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.