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Finding the Fourth Proportional to 18,491.80, 27,737.70 and 6,802.60

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Solution

The fourth proportional to 18,491.80, 27,737.70 and 6,802.60 is: 10,203.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.80 : 27,737.70 = 6,802.60 : x
  2. Step 2: Convert to fraction form
    18,491.80/27,737.70 = 6,802.60/x
  3. Step 3: Cross multiply
    18,491.80x = 27,737.70 × 6,802.60
  4. Step 4: Simplify right side
    18,491.80x = 188,688,478.02
  5. Step 5: Solve for x
    x = 188,688,478.02/18,491.80
  6. Step 6: Final answer
    x = 10,203.90

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1.5x scale

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.