Home / 21,447-32,172.75-5,864.63

Finding the Fourth Proportional to 21,447, 32,172.75 and 5,864.63

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Solution

The fourth proportional to 21,447, 32,172.75 and 5,864.63 is: 8,797.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,447 : 32,172.75 = 5,864.63 : x
  2. Step 2: Convert to fraction form
    21,447/32,172.75 = 5,864.63/x
  3. Step 3: Cross multiply
    21,447x = 32,172.75 × 5,864.63
  4. Step 4: Simplify right side
    21,447x = 188,681,113.97
  5. Step 5: Solve for x
    x = 188,681,113.97/21,447
  6. Step 6: Final answer
    x = 8,797.55

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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.