Home / 14,122.80-21,180.15-4,259.70

Finding the Fourth Proportional to 14,122.80, 21,180.15 and 4,259.70

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Solution

The fourth proportional to 14,122.80, 21,180.15 and 4,259.70 is: 6,388.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,122.80 : 21,180.15 = 4,259.70 : x
  2. Step 2: Convert to fraction form
    14,122.80/21,180.15 = 4,259.70/x
  3. Step 3: Cross multiply
    14,122.80x = 21,180.15 × 4,259.70
  4. Step 4: Simplify right side
    14,122.80x = 90,221,084.96
  5. Step 5: Solve for x
    x = 90,221,084.96/14,122.80
  6. Step 6: Final answer
    x = 6,388.33

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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.