Home / 28,181.88-38,892.21-15,606.63

Finding the Fourth Proportional to 28,181.88, 38,892.21 and 15,606.63

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Solution

The fourth proportional to 28,181.88, 38,892.21 and 15,606.63 is: 21,537.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.88 : 38,892.21 = 15,606.63 : x
  2. Step 2: Convert to fraction form
    28,181.88/38,892.21 = 15,606.63/x
  3. Step 3: Cross multiply
    28,181.88x = 38,892.21 × 15,606.63
  4. Step 4: Simplify right side
    28,181.88x = 606,976,136.89
  5. Step 5: Solve for x
    x = 606,976,136.89/28,181.88
  6. Step 6: Final answer
    x = 21,537.82

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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.