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Finding the Fourth Proportional to 12,325.57, 17,009.49 and 7,020.47

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Solution

The fourth proportional to 12,325.57, 17,009.49 and 7,020.47 is: 9,688.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,325.57 : 17,009.49 = 7,020.47 : x
  2. Step 2: Convert to fraction form
    12,325.57/17,009.49 = 7,020.47/x
  3. Step 3: Cross multiply
    12,325.57x = 17,009.49 × 7,020.47
  4. Step 4: Simplify right side
    12,325.57x = 119,414,683.11
  5. Step 5: Solve for x
    x = 119,414,683.11/12,325.57
  6. Step 6: Final answer
    x = 9,688.37

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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.