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Finding the Fourth Proportional to 18,851.70, 28,265.94 and 6,370.55

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Solution

The fourth proportional to 18,851.70, 28,265.94 and 6,370.55 is: 9,551.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,851.70 : 28,265.94 = 6,370.55 : x
  2. Step 2: Convert to fraction form
    18,851.70/28,265.94 = 6,370.55/x
  3. Step 3: Cross multiply
    18,851.70x = 28,265.94 × 6,370.55
  4. Step 4: Simplify right side
    18,851.70x = 180,069,442.74
  5. Step 5: Solve for x
    x = 180,069,442.74/18,851.70
  6. Step 6: Final answer
    x = 9,551.89

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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.