Home / 15,015.24-20,720.42-8,300.44

Finding the Fourth Proportional to 15,015.24, 20,720.42 and 8,300.44

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Solution

The fourth proportional to 15,015.24, 20,720.42 and 8,300.44 is: 11,454.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015.24 : 20,720.42 = 8,300.44 : x
  2. Step 2: Convert to fraction form
    15,015.24/20,720.42 = 8,300.44/x
  3. Step 3: Cross multiply
    15,015.24x = 20,720.42 × 8,300.44
  4. Step 4: Simplify right side
    15,015.24x = 171,988,602.98
  5. Step 5: Solve for x
    x = 171,988,602.98/15,015.24
  6. Step 6: Final answer
    x = 11,454.27

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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.