Home / 15,735.13-21,715.10-8,662.21

Finding the Fourth Proportional to 15,735.13, 21,715.10 and 8,662.21

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Solution

The fourth proportional to 15,735.13, 21,715.10 and 8,662.21 is: 11,954.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,735.13 : 21,715.10 = 8,662.21 : x
  2. Step 2: Convert to fraction form
    15,735.13/21,715.10 = 8,662.21/x
  3. Step 3: Cross multiply
    15,735.13x = 21,715.10 × 8,662.21
  4. Step 4: Simplify right side
    15,735.13x = 188,100,756.37
  5. Step 5: Solve for x
    x = 188,100,756.37/15,735.13
  6. Step 6: Final answer
    x = 11,954.19

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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.