Home / 12,724.50-19,088.10-3,490.50

Finding the Fourth Proportional to 12,724.50, 19,088.10 and 3,490.50

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Solution

The fourth proportional to 12,724.50, 19,088.10 and 3,490.50 is: 5,236.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,724.50 : 19,088.10 = 3,490.50 : x
  2. Step 2: Convert to fraction form
    12,724.50/19,088.10 = 3,490.50/x
  3. Step 3: Cross multiply
    12,724.50x = 19,088.10 × 3,490.50
  4. Step 4: Simplify right side
    12,724.50x = 66,627,013.05
  5. Step 5: Solve for x
    x = 66,627,013.05/12,724.50
  6. Step 6: Final answer
    x = 5,236.12

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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.