Home / 14,478.75-21,721.37-5,118.66

Finding the Fourth Proportional to 14,478.75, 21,721.37 and 5,118.66

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Solution

The fourth proportional to 14,478.75, 21,721.37 and 5,118.66 is: 7,679.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.75 : 21,721.37 = 5,118.66 : x
  2. Step 2: Convert to fraction form
    14,478.75/21,721.37 = 5,118.66/x
  3. Step 3: Cross multiply
    14,478.75x = 21,721.37 × 5,118.66
  4. Step 4: Simplify right side
    14,478.75x = 111,184,282.17
  5. Step 5: Solve for x
    x = 111,184,282.17/14,478.75
  6. Step 6: Final answer
    x = 7,679.14

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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.