Home / 10,821.78-14,934.06-5,853.78

Finding the Fourth Proportional to 10,821.78, 14,934.06 and 5,853.78

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Solution

The fourth proportional to 10,821.78, 14,934.06 and 5,853.78 is: 8,078.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,821.78 : 14,934.06 = 5,853.78 : x
  2. Step 2: Convert to fraction form
    10,821.78/14,934.06 = 5,853.78/x
  3. Step 3: Cross multiply
    10,821.78x = 14,934.06 × 5,853.78
  4. Step 4: Simplify right side
    10,821.78x = 87,420,701.75
  5. Step 5: Solve for x
    x = 87,420,701.75/10,821.78
  6. Step 6: Final answer
    x = 8,078.22

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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.