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Finding the Fourth Proportional to 18,597.70, 27,880.15 and 6,902.72

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Solution

The fourth proportional to 18,597.70, 27,880.15 and 6,902.72 is: 10,347.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597.70 : 27,880.15 = 6,902.72 : x
  2. Step 2: Convert to fraction form
    18,597.70/27,880.15 = 6,902.72/x
  3. Step 3: Cross multiply
    18,597.70x = 27,880.15 × 6,902.72
  4. Step 4: Simplify right side
    18,597.70x = 192,448,829.84
  5. Step 5: Solve for x
    x = 192,448,829.84/18,597.70
  6. Step 6: Final answer
    x = 10,347.99

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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.