Home / 9,821.78-13,559.06-6,651.82

Finding the Fourth Proportional to 9,821.78, 13,559.06 and 6,651.82

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Solution

The fourth proportional to 9,821.78, 13,559.06 and 6,651.82 is: 9,182.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,821.78 : 13,559.06 = 6,651.82 : x
  2. Step 2: Convert to fraction form
    9,821.78/13,559.06 = 6,651.82/x
  3. Step 3: Cross multiply
    9,821.78x = 13,559.06 × 6,651.82
  4. Step 4: Simplify right side
    9,821.78x = 90,192,426.49
  5. Step 5: Solve for x
    x = 90,192,426.49/9,821.78
  6. Step 6: Final answer
    x = 9,182.90

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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.