Home / 15,511.15-21,403.60-8,795.44

Finding the Fourth Proportional to 15,511.15, 21,403.60 and 8,795.44

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Solution

The fourth proportional to 15,511.15, 21,403.60 and 8,795.44 is: 12,136.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.15 : 21,403.60 = 8,795.44 : x
  2. Step 2: Convert to fraction form
    15,511.15/21,403.60 = 8,795.44/x
  3. Step 3: Cross multiply
    15,511.15x = 21,403.60 × 8,795.44
  4. Step 4: Simplify right side
    15,511.15x = 188,254,079.58
  5. Step 5: Solve for x
    x = 188,254,079.58/15,511.15
  6. Step 6: Final answer
    x = 12,136.69

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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.