Home / 14,178.80-21,268.20-6,781.52

Finding the Fourth Proportional to 14,178.80, 21,268.20 and 6,781.52

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Solution

The fourth proportional to 14,178.80, 21,268.20 and 6,781.52 is: 10,172.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,178.80 : 21,268.20 = 6,781.52 : x
  2. Step 2: Convert to fraction form
    14,178.80/21,268.20 = 6,781.52/x
  3. Step 3: Cross multiply
    14,178.80x = 21,268.20 × 6,781.52
  4. Step 4: Simplify right side
    14,178.80x = 144,230,723.66
  5. Step 5: Solve for x
    x = 144,230,723.66/14,178.80
  6. Step 6: Final answer
    x = 10,172.28

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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.