Home / 15,816.78-21,827.43-8,743.23

Finding the Fourth Proportional to 15,816.78, 21,827.43 and 8,743.23

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Solution

The fourth proportional to 15,816.78, 21,827.43 and 8,743.23 is: 12,065.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.78 : 21,827.43 = 8,743.23 : x
  2. Step 2: Convert to fraction form
    15,816.78/21,827.43 = 8,743.23/x
  3. Step 3: Cross multiply
    15,816.78x = 21,827.43 × 8,743.23
  4. Step 4: Simplify right side
    15,816.78x = 190,842,240.80
  5. Step 5: Solve for x
    x = 190,842,240.80/15,816.78
  6. Step 6: Final answer
    x = 12,065.81

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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.