Home / 21,795.84-30,092.55-15,102

Finding the Fourth Proportional to 21,795.84, 30,092.55 and 15,102

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Solution

The fourth proportional to 21,795.84, 30,092.55 and 15,102 is: 20,850.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,795.84 : 30,092.55 = 15,102 : x
  2. Step 2: Convert to fraction form
    21,795.84/30,092.55 = 15,102/x
  3. Step 3: Cross multiply
    21,795.84x = 30,092.55 × 15,102
  4. Step 4: Simplify right side
    21,795.84x = 454,457,690.10
  5. Step 5: Solve for x
    x = 454,457,690.10/21,795.84
  6. Step 6: Final answer
    x = 20,850.66

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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.