Home / 19,539.28-26,963.58-11,155.78

Finding the Fourth Proportional to 19,539.28, 26,963.58 and 11,155.78

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Solution

The fourth proportional to 19,539.28, 26,963.58 and 11,155.78 is: 15,394.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,539.28 : 26,963.58 = 11,155.78 : x
  2. Step 2: Convert to fraction form
    19,539.28/26,963.58 = 11,155.78/x
  3. Step 3: Cross multiply
    19,539.28x = 26,963.58 × 11,155.78
  4. Step 4: Simplify right side
    19,539.28x = 300,799,766.49
  5. Step 5: Solve for x
    x = 300,799,766.49/19,539.28
  6. Step 6: Final answer
    x = 15,394.62

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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.