Home / 15,450.26-21,310.03-10,143.14

Finding the Fourth Proportional to 15,450.26, 21,310.03 and 10,143.14

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Solution

The fourth proportional to 15,450.26, 21,310.03 and 10,143.14 is: 13,990.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.26 : 21,310.03 = 10,143.14 : x
  2. Step 2: Convert to fraction form
    15,450.26/21,310.03 = 10,143.14/x
  3. Step 3: Cross multiply
    15,450.26x = 21,310.03 × 10,143.14
  4. Step 4: Simplify right side
    15,450.26x = 216,150,617.69
  5. Step 5: Solve for x
    x = 216,150,617.69/15,450.26
  6. Step 6: Final answer
    x = 13,990.10

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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.