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Finding the Fourth Proportional to 12,668.10, 19,002.15 and 3,905.70

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Solution

The fourth proportional to 12,668.10, 19,002.15 and 3,905.70 is: 5,858.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.10 : 19,002.15 = 3,905.70 : x
  2. Step 2: Convert to fraction form
    12,668.10/19,002.15 = 3,905.70/x
  3. Step 3: Cross multiply
    12,668.10x = 19,002.15 × 3,905.70
  4. Step 4: Simplify right side
    12,668.10x = 74,216,697.26
  5. Step 5: Solve for x
    x = 74,216,697.26/12,668.10
  6. Step 6: Final answer
    x = 5,858.55

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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.