Home / 9,721.98-13,415.10-6,135.60

Finding the Fourth Proportional to 9,721.98, 13,415.10 and 6,135.60

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Solution

The fourth proportional to 9,721.98, 13,415.10 and 6,135.60 is: 8,466.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.98 : 13,415.10 = 6,135.60 : x
  2. Step 2: Convert to fraction form
    9,721.98/13,415.10 = 6,135.60/x
  3. Step 3: Cross multiply
    9,721.98x = 13,415.10 × 6,135.60
  4. Step 4: Simplify right side
    9,721.98x = 82,309,687.56
  5. Step 5: Solve for x
    x = 82,309,687.56/9,721.98
  6. Step 6: Final answer
    x = 8,466.35

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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.