Home / 15,106.22-20,843.55-8,390.91

Finding the Fourth Proportional to 15,106.22, 20,843.55 and 8,390.91

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Solution

The fourth proportional to 15,106.22, 20,843.55 and 8,390.91 is: 11,577.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.22 : 20,843.55 = 8,390.91 : x
  2. Step 2: Convert to fraction form
    15,106.22/20,843.55 = 8,390.91/x
  3. Step 3: Cross multiply
    15,106.22x = 20,843.55 × 8,390.91
  4. Step 4: Simplify right side
    15,106.22x = 174,896,352.13
  5. Step 5: Solve for x
    x = 174,896,352.13/15,106.22
  6. Step 6: Final answer
    x = 11,577.77

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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.