Home / 28,181.63-38,891.87-15,606.38

Finding the Fourth Proportional to 28,181.63, 38,891.87 and 15,606.38

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Solution

The fourth proportional to 28,181.63, 38,891.87 and 15,606.38 is: 21,537.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.63 : 38,891.87 = 15,606.38 : x
  2. Step 2: Convert to fraction form
    28,181.63/38,891.87 = 15,606.38/x
  3. Step 3: Cross multiply
    28,181.63x = 38,891.87 × 15,606.38
  4. Step 4: Simplify right side
    28,181.63x = 606,961,029.64
  5. Step 5: Solve for x
    x = 606,961,029.64/28,181.63
  6. Step 6: Final answer
    x = 21,537.47

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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.