Home / 15,103.08-20,841.21-8,388.51

Finding the Fourth Proportional to 15,103.08, 20,841.21 and 8,388.51

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Solution

The fourth proportional to 15,103.08, 20,841.21 and 8,388.51 is: 11,575.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,103.08 : 20,841.21 = 8,388.51 : x
  2. Step 2: Convert to fraction form
    15,103.08/20,841.21 = 8,388.51/x
  3. Step 3: Cross multiply
    15,103.08x = 20,841.21 × 8,388.51
  4. Step 4: Simplify right side
    15,103.08x = 174,826,698.50
  5. Step 5: Solve for x
    x = 174,826,698.50/15,103.08
  6. Step 6: Final answer
    x = 11,575.57

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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.