Home / 15,784.27-21,790.17-9,817.86

Finding the Fourth Proportional to 15,784.27, 21,790.17 and 9,817.86

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Solution

The fourth proportional to 15,784.27, 21,790.17 and 9,817.86 is: 13,553.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,784.27 : 21,790.17 = 9,817.86 : x
  2. Step 2: Convert to fraction form
    15,784.27/21,790.17 = 9,817.86/x
  3. Step 3: Cross multiply
    15,784.27x = 21,790.17 × 9,817.86
  4. Step 4: Simplify right side
    15,784.27x = 213,932,838.44
  5. Step 5: Solve for x
    x = 213,932,838.44/15,784.27
  6. Step 6: Final answer
    x = 13,553.55

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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.