Home / 15,895.23-21,935.79-8,821.50

Finding the Fourth Proportional to 15,895.23, 21,935.79 and 8,821.50

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Solution

The fourth proportional to 15,895.23, 21,935.79 and 8,821.50 is: 12,173.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,895.23 : 21,935.79 = 8,821.50 : x
  2. Step 2: Convert to fraction form
    15,895.23/21,935.79 = 8,821.50/x
  3. Step 3: Cross multiply
    15,895.23x = 21,935.79 × 8,821.50
  4. Step 4: Simplify right side
    15,895.23x = 193,506,571.49
  5. Step 5: Solve for x
    x = 193,506,571.49/15,895.23
  6. Step 6: Final answer
    x = 12,173.88

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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.