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Finding the Fourth Proportional to 8,727.80, 13,069.83 and 6,888.90

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Solution

The fourth proportional to 8,727.80, 13,069.83 and 6,888.90 is: 10,316.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,727.80 : 13,069.83 = 6,888.90 : x
  2. Step 2: Convert to fraction form
    8,727.80/13,069.83 = 6,888.90/x
  3. Step 3: Cross multiply
    8,727.80x = 13,069.83 × 6,888.90
  4. Step 4: Simplify right side
    8,727.80x = 90,036,751.89
  5. Step 5: Solve for x
    x = 90,036,751.89/8,727.80
  6. Step 6: Final answer
    x = 10,316.09

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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.