Home / 15,120.44-20,866.26-8,406.04

Finding the Fourth Proportional to 15,120.44, 20,866.26 and 8,406.04

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Solution

The fourth proportional to 15,120.44, 20,866.26 and 8,406.04 is: 11,600.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,120.44 : 20,866.26 = 8,406.04 : x
  2. Step 2: Convert to fraction form
    15,120.44/20,866.26 = 8,406.04/x
  3. Step 3: Cross multiply
    15,120.44x = 20,866.26 × 8,406.04
  4. Step 4: Simplify right side
    15,120.44x = 175,402,616.21
  5. Step 5: Solve for x
    x = 175,402,616.21/15,120.44
  6. Step 6: Final answer
    x = 11,600.36

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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.