Home / 14,612.80-21,919.20-6,822.40

Finding the Fourth Proportional to 14,612.80, 21,919.20 and 6,822.40

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Solution

The fourth proportional to 14,612.80, 21,919.20 and 6,822.40 is: 10,233.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,612.80 : 21,919.20 = 6,822.40 : x
  2. Step 2: Convert to fraction form
    14,612.80/21,919.20 = 6,822.40/x
  3. Step 3: Cross multiply
    14,612.80x = 21,919.20 × 6,822.40
  4. Step 4: Simplify right side
    14,612.80x = 149,541,550.08
  5. Step 5: Solve for x
    x = 149,541,550.08/14,612.80
  6. Step 6: Final answer
    x = 10,233.60

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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.