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Finding the Fourth Proportional to 12,472.65, 17,212.11 and 6,807.50

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Solution

The fourth proportional to 12,472.65, 17,212.11 and 6,807.50 is: 9,394.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.65 : 17,212.11 = 6,807.50 : x
  2. Step 2: Convert to fraction form
    12,472.65/17,212.11 = 6,807.50/x
  3. Step 3: Cross multiply
    12,472.65x = 17,212.11 × 6,807.50
  4. Step 4: Simplify right side
    12,472.65x = 117,171,438.83
  5. Step 5: Solve for x
    x = 117,171,438.83/12,472.65
  6. Step 6: Final answer
    x = 9,394.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.