Home / 14,187.80-21,280.06-5,422.52

Finding the Fourth Proportional to 14,187.80, 21,280.06 and 5,422.52

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Solution

The fourth proportional to 14,187.80, 21,280.06 and 5,422.52 is: 8,133.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,187.80 : 21,280.06 = 5,422.52 : x
  2. Step 2: Convert to fraction form
    14,187.80/21,280.06 = 5,422.52/x
  3. Step 3: Cross multiply
    14,187.80x = 21,280.06 × 5,422.52
  4. Step 4: Simplify right side
    14,187.80x = 115,391,550.95
  5. Step 5: Solve for x
    x = 115,391,550.95/14,187.80
  6. Step 6: Final answer
    x = 8,133.15

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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.