Home / 19,966.40-29,949.60-6,816.80

Finding the Fourth Proportional to 19,966.40, 29,949.60 and 6,816.80

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Solution

The fourth proportional to 19,966.40, 29,949.60 and 6,816.80 is: 10,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,966.40 : 29,949.60 = 6,816.80 : x
  2. Step 2: Convert to fraction form
    19,966.40/29,949.60 = 6,816.80/x
  3. Step 3: Cross multiply
    19,966.40x = 29,949.60 × 6,816.80
  4. Step 4: Simplify right side
    19,966.40x = 204,160,433.28
  5. Step 5: Solve for x
    x = 204,160,433.28/19,966.40
  6. Step 6: Final answer
    x = 10,225.20

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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.