Home / 15,808-21,816.16-8,734.56

Finding the Fourth Proportional to 15,808, 21,816.16 and 8,734.56

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Solution

The fourth proportional to 15,808, 21,816.16 and 8,734.56 is: 12,054.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,808 : 21,816.16 = 8,734.56 : x
  2. Step 2: Convert to fraction form
    15,808/21,816.16 = 8,734.56/x
  3. Step 3: Cross multiply
    15,808x = 21,816.16 × 8,734.56
  4. Step 4: Simplify right side
    15,808x = 190,554,558.49
  5. Step 5: Solve for x
    x = 190,554,558.49/15,808
  6. Step 6: Final answer
    x = 12,054.31

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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.