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Finding the Fourth Proportional to 34,639.70, 47,802.63 and 18,724.11

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Solution

The fourth proportional to 34,639.70, 47,802.63 and 18,724.11 is: 25,839.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,639.70 : 47,802.63 = 18,724.11 : x
  2. Step 2: Convert to fraction form
    34,639.70/47,802.63 = 18,724.11/x
  3. Step 3: Cross multiply
    34,639.70x = 47,802.63 × 18,724.11
  4. Step 4: Simplify right side
    34,639.70x = 895,061,702.41
  5. Step 5: Solve for x
    x = 895,061,702.41/34,639.70
  6. Step 6: Final answer
    x = 25,839.19

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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.