Home / 21,168.75-31,760.24-14,850.21

Finding the Fourth Proportional to 21,168.75, 31,760.24 and 14,850.21

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Solution

The fourth proportional to 21,168.75, 31,760.24 and 14,850.21 is: 22,280.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.75 : 31,760.24 = 14,850.21 : x
  2. Step 2: Convert to fraction form
    21,168.75/31,760.24 = 14,850.21/x
  3. Step 3: Cross multiply
    21,168.75x = 31,760.24 × 14,850.21
  4. Step 4: Simplify right side
    21,168.75x = 471,646,159.40
  5. Step 5: Solve for x
    x = 471,646,159.40/21,168.75
  6. Step 6: Final answer
    x = 22,280.30

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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.