Home / 21,054.54-31,592.88-8,583.78

Finding the Fourth Proportional to 21,054.54, 31,592.88 and 8,583.78

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Solution

The fourth proportional to 21,054.54, 31,592.88 and 8,583.78 is: 12,880.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054.54 : 31,592.88 = 8,583.78 : x
  2. Step 2: Convert to fraction form
    21,054.54/31,592.88 = 8,583.78/x
  3. Step 3: Cross multiply
    21,054.54x = 31,592.88 × 8,583.78
  4. Step 4: Simplify right side
    21,054.54x = 271,186,331.49
  5. Step 5: Solve for x
    x = 271,186,331.49/21,054.54
  6. Step 6: Final answer
    x = 12,880.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.