Home / 21,161.74-31,742.66-5,366.77

Finding the Fourth Proportional to 21,161.74, 31,742.66 and 5,366.77

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Solution

The fourth proportional to 21,161.74, 31,742.66 and 5,366.77 is: 8,050.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.74 : 31,742.66 = 5,366.77 : x
  2. Step 2: Convert to fraction form
    21,161.74/31,742.66 = 5,366.77/x
  3. Step 3: Cross multiply
    21,161.74x = 31,742.66 × 5,366.77
  4. Step 4: Simplify right side
    21,161.74x = 170,355,555.41
  5. Step 5: Solve for x
    x = 170,355,555.41/21,161.74
  6. Step 6: Final answer
    x = 8,050.17

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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.