Home / 14,119.86-21,179.79-4,259.46

Finding the Fourth Proportional to 14,119.86, 21,179.79 and 4,259.46

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Solution

The fourth proportional to 14,119.86, 21,179.79 and 4,259.46 is: 6,389.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,119.86 : 21,179.79 = 4,259.46 : x
  2. Step 2: Convert to fraction form
    14,119.86/21,179.79 = 4,259.46/x
  3. Step 3: Cross multiply
    14,119.86x = 21,179.79 × 4,259.46
  4. Step 4: Simplify right side
    14,119.86x = 90,214,468.31
  5. Step 5: Solve for x
    x = 90,214,468.31/14,119.86
  6. Step 6: Final answer
    x = 6,389.19

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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.