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Finding the Fourth Proportional to 12,616.15, 18,927.11 and 4,296.31

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Solution

The fourth proportional to 12,616.15, 18,927.11 and 4,296.31 is: 6,445.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,616.15 : 18,927.11 = 4,296.31 : x
  2. Step 2: Convert to fraction form
    12,616.15/18,927.11 = 4,296.31/x
  3. Step 3: Cross multiply
    12,616.15x = 18,927.11 × 4,296.31
  4. Step 4: Simplify right side
    12,616.15x = 81,316,731.96
  5. Step 5: Solve for x
    x = 81,316,731.96/12,616.15
  6. Step 6: Final answer
    x = 6,445.45

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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.