Home / 10,121.49-15,172.99-3,544.09

Finding the Fourth Proportional to 10,121.49, 15,172.99 and 3,544.09

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Solution

The fourth proportional to 10,121.49, 15,172.99 and 3,544.09 is: 5,312.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.49 : 15,172.99 = 3,544.09 : x
  2. Step 2: Convert to fraction form
    10,121.49/15,172.99 = 3,544.09/x
  3. Step 3: Cross multiply
    10,121.49x = 15,172.99 × 3,544.09
  4. Step 4: Simplify right side
    10,121.49x = 53,774,395.34
  5. Step 5: Solve for x
    x = 53,774,395.34/10,121.49
  6. Step 6: Final answer
    x = 5,312.89

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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.