Home / 19,528.80-26,956.81-12,816.60

Finding the Fourth Proportional to 19,528.80, 26,956.81 and 12,816.60

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Solution

The fourth proportional to 19,528.80, 26,956.81 and 12,816.60 is: 17,691.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,528.80 : 26,956.81 = 12,816.60 : x
  2. Step 2: Convert to fraction form
    19,528.80/26,956.81 = 12,816.60/x
  3. Step 3: Cross multiply
    19,528.80x = 26,956.81 × 12,816.60
  4. Step 4: Simplify right side
    19,528.80x = 345,494,651.05
  5. Step 5: Solve for x
    x = 345,494,651.05/19,528.80
  6. Step 6: Final answer
    x = 17,691.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.