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Finding the Fourth Proportional to 18,712.98, 28,050.93 and 7,626.11

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Solution

The fourth proportional to 18,712.98, 28,050.93 and 7,626.11 is: 11,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,712.98 : 28,050.93 = 7,626.11 : x
  2. Step 2: Convert to fraction form
    18,712.98/28,050.93 = 7,626.11/x
  3. Step 3: Cross multiply
    18,712.98x = 28,050.93 × 7,626.11
  4. Step 4: Simplify right side
    18,712.98x = 213,919,337.53
  5. Step 5: Solve for x
    x = 213,919,337.53/18,712.98
  6. Step 6: Final answer
    x = 11,431.60

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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.