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Finding the Fourth Proportional to 18,850.51, 28,276.98 and 7,756.95

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Solution

The fourth proportional to 18,850.51, 28,276.98 and 7,756.95 is: 11,635.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,850.51 : 28,276.98 = 7,756.95 : x
  2. Step 2: Convert to fraction form
    18,850.51/28,276.98 = 7,756.95/x
  3. Step 3: Cross multiply
    18,850.51x = 28,276.98 × 7,756.95
  4. Step 4: Simplify right side
    18,850.51x = 219,343,120.01
  5. Step 5: Solve for x
    x = 219,343,120.01/18,850.51
  6. Step 6: Final answer
    x = 11,635.92

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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.