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Finding the Fourth Proportional to 18,758.52, 28,140.72 and 6,276.24

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Solution

The fourth proportional to 18,758.52, 28,140.72 and 6,276.24 is: 9,415.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.52 : 28,140.72 = 6,276.24 : x
  2. Step 2: Convert to fraction form
    18,758.52/28,140.72 = 6,276.24/x
  3. Step 3: Cross multiply
    18,758.52x = 28,140.72 × 6,276.24
  4. Step 4: Simplify right side
    18,758.52x = 176,617,912.49
  5. Step 5: Solve for x
    x = 176,617,912.49/18,758.52
  6. Step 6: Final answer
    x = 9,415.34

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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.