Home / 14,188.87-21,287.41-5,424.47

Finding the Fourth Proportional to 14,188.87, 21,287.41 and 5,424.47

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Solution

The fourth proportional to 14,188.87, 21,287.41 and 5,424.47 is: 8,138.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,188.87 : 21,287.41 = 5,424.47 : x
  2. Step 2: Convert to fraction form
    14,188.87/21,287.41 = 5,424.47/x
  3. Step 3: Cross multiply
    14,188.87x = 21,287.41 × 5,424.47
  4. Step 4: Simplify right side
    14,188.87x = 115,472,876.75
  5. Step 5: Solve for x
    x = 115,472,876.75/14,188.87
  6. Step 6: Final answer
    x = 8,138.27

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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.