Home / 20,591.64-30,828.60-19,283.79

Finding the Fourth Proportional to 20,591.64, 30,828.60 and 19,283.79

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Solution

The fourth proportional to 20,591.64, 30,828.60 and 19,283.79 is: 28,870.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.64 : 30,828.60 = 19,283.79 : x
  2. Step 2: Convert to fraction form
    20,591.64/30,828.60 = 19,283.79/x
  3. Step 3: Cross multiply
    20,591.64x = 30,828.60 × 19,283.79
  4. Step 4: Simplify right side
    20,591.64x = 594,492,248.39
  5. Step 5: Solve for x
    x = 594,492,248.39/20,591.64
  6. Step 6: Final answer
    x = 28,870.56

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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.