Home / 15,555.65-21,467.26-8,841.56

Finding the Fourth Proportional to 15,555.65, 21,467.26 and 8,841.56

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Solution

The fourth proportional to 15,555.65, 21,467.26 and 8,841.56 is: 12,201.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555.65 : 21,467.26 = 8,841.56 : x
  2. Step 2: Convert to fraction form
    15,555.65/21,467.26 = 8,841.56/x
  3. Step 3: Cross multiply
    15,555.65x = 21,467.26 × 8,841.56
  4. Step 4: Simplify right side
    15,555.65x = 189,804,023.12
  5. Step 5: Solve for x
    x = 189,804,023.12/15,555.65
  6. Step 6: Final answer
    x = 12,201.61

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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.