Home / 14,120.31-21,180.62-4,259.68

Finding the Fourth Proportional to 14,120.31, 21,180.62 and 4,259.68

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Solution

The fourth proportional to 14,120.31, 21,180.62 and 4,259.68 is: 6,389.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,120.31 : 21,180.62 = 4,259.68 : x
  2. Step 2: Convert to fraction form
    14,120.31/21,180.62 = 4,259.68/x
  3. Step 3: Cross multiply
    14,120.31x = 21,180.62 × 4,259.68
  4. Step 4: Simplify right side
    14,120.31x = 90,222,621.10
  5. Step 5: Solve for x
    x = 90,222,621.10/14,120.31
  6. Step 6: Final answer
    x = 6,389.56

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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.