Home / 10,972.53-15,137.99-7,197.79

Finding the Fourth Proportional to 10,972.53, 15,137.99 and 7,197.79

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Solution

The fourth proportional to 10,972.53, 15,137.99 and 7,197.79 is: 9,930.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,972.53 : 15,137.99 = 7,197.79 : x
  2. Step 2: Convert to fraction form
    10,972.53/15,137.99 = 7,197.79/x
  3. Step 3: Cross multiply
    10,972.53x = 15,137.99 × 7,197.79
  4. Step 4: Simplify right side
    10,972.53x = 108,960,012.01
  5. Step 5: Solve for x
    x = 108,960,012.01/10,972.53
  6. Step 6: Final answer
    x = 9,930.26

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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.