Home / 28,137.24-38,827.44-15,561

Finding the Fourth Proportional to 28,137.24, 38,827.44 and 15,561

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Solution

The fourth proportional to 28,137.24, 38,827.44 and 15,561 is: 21,473.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137.24 : 38,827.44 = 15,561 : x
  2. Step 2: Convert to fraction form
    28,137.24/38,827.44 = 15,561/x
  3. Step 3: Cross multiply
    28,137.24x = 38,827.44 × 15,561
  4. Step 4: Simplify right side
    28,137.24x = 604,193,793.84
  5. Step 5: Solve for x
    x = 604,193,793.84/28,137.24
  6. Step 6: Final answer
    x = 21,473.10

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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.