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Finding the Fourth Proportional to 19,318.77, 28,975.59 and 6,839.10

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Solution

The fourth proportional to 19,318.77, 28,975.59 and 6,839.10 is: 10,257.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,318.77 : 28,975.59 = 6,839.10 : x
  2. Step 2: Convert to fraction form
    19,318.77/28,975.59 = 6,839.10/x
  3. Step 3: Cross multiply
    19,318.77x = 28,975.59 × 6,839.10
  4. Step 4: Simplify right side
    19,318.77x = 198,166,957.57
  5. Step 5: Solve for x
    x = 198,166,957.57/19,318.77
  6. Step 6: Final answer
    x = 10,257.74

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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.