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Finding the Fourth Proportional to 12,964.44, 19,445.04 and 3,605.16

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Solution

The fourth proportional to 12,964.44, 19,445.04 and 3,605.16 is: 5,407.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,964.44 : 19,445.04 = 3,605.16 : x
  2. Step 2: Convert to fraction form
    12,964.44/19,445.04 = 3,605.16/x
  3. Step 3: Cross multiply
    12,964.44x = 19,445.04 × 3,605.16
  4. Step 4: Simplify right side
    12,964.44x = 70,102,480.41
  5. Step 5: Solve for x
    x = 70,102,480.41/12,964.44
  6. Step 6: Final answer
    x = 5,407.29

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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.