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Finding the Fourth Proportional to 13,182.76, 19,774.22 and 5,391.58

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Solution

The fourth proportional to 13,182.76, 19,774.22 and 5,391.58 is: 8,087.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,182.76 : 19,774.22 = 5,391.58 : x
  2. Step 2: Convert to fraction form
    13,182.76/19,774.22 = 5,391.58/x
  3. Step 3: Cross multiply
    13,182.76x = 19,774.22 × 5,391.58
  4. Step 4: Simplify right side
    13,182.76x = 106,614,289.07
  5. Step 5: Solve for x
    x = 106,614,289.07/13,182.76
  6. Step 6: Final answer
    x = 8,087.40

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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.