Home / 11,395.80-15,727.59-6,680.08

Finding the Fourth Proportional to 11,395.80, 15,727.59 and 6,680.08

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Solution

The fourth proportional to 11,395.80, 15,727.59 and 6,680.08 is: 9,219.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,395.80 : 15,727.59 = 6,680.08 : x
  2. Step 2: Convert to fraction form
    11,395.80/15,727.59 = 6,680.08/x
  3. Step 3: Cross multiply
    11,395.80x = 15,727.59 × 6,680.08
  4. Step 4: Simplify right side
    11,395.80x = 105,061,520.09
  5. Step 5: Solve for x
    x = 105,061,520.09/11,395.80
  6. Step 6: Final answer
    x = 9,219.32

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1.5x scale

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.