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Finding the Fourth Proportional to 12,605.04, 18,916.27 and 5,209.56

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Solution

The fourth proportional to 12,605.04, 18,916.27 and 5,209.56 is: 7,817.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.04 : 18,916.27 = 5,209.56 : x
  2. Step 2: Convert to fraction form
    12,605.04/18,916.27 = 5,209.56/x
  3. Step 3: Cross multiply
    12,605.04x = 18,916.27 × 5,209.56
  4. Step 4: Simplify right side
    12,605.04x = 98,545,443.54
  5. Step 5: Solve for x
    x = 98,545,443.54/12,605.04
  6. Step 6: Final answer
    x = 7,817.94

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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.