Home / 12,972.07-17,900.24-7,665.87

Finding the Fourth Proportional to 12,972.07, 17,900.24 and 7,665.87

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Solution

The fourth proportional to 12,972.07, 17,900.24 and 7,665.87 is: 10,578.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,972.07 : 17,900.24 = 7,665.87 : x
  2. Step 2: Convert to fraction form
    12,972.07/17,900.24 = 7,665.87/x
  3. Step 3: Cross multiply
    12,972.07x = 17,900.24 × 7,665.87
  4. Step 4: Simplify right side
    12,972.07x = 137,220,912.81
  5. Step 5: Solve for x
    x = 137,220,912.81/12,972.07
  6. Step 6: Final answer
    x = 10,578.18

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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.