Home / 21,847.49-30,137.36-15,137.04

Finding the Fourth Proportional to 21,847.49, 30,137.36 and 15,137.04

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Solution

The fourth proportional to 21,847.49, 30,137.36 and 15,137.04 is: 20,880.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,847.49 : 30,137.36 = 15,137.04 : x
  2. Step 2: Convert to fraction form
    21,847.49/30,137.36 = 15,137.04/x
  3. Step 3: Cross multiply
    21,847.49x = 30,137.36 × 15,137.04
  4. Step 4: Simplify right side
    21,847.49x = 456,190,348.13
  5. Step 5: Solve for x
    x = 456,190,348.13/21,847.49
  6. Step 6: Final answer
    x = 20,880.68

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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.