Home / 21,271.98-29,356.38-11,840.34

Finding the Fourth Proportional to 21,271.98, 29,356.38 and 11,840.34

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Solution

The fourth proportional to 21,271.98, 29,356.38 and 11,840.34 is: 16,340.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.98 : 29,356.38 = 11,840.34 : x
  2. Step 2: Convert to fraction form
    21,271.98/29,356.38 = 11,840.34/x
  3. Step 3: Cross multiply
    21,271.98x = 29,356.38 × 11,840.34
  4. Step 4: Simplify right side
    21,271.98x = 347,589,520.37
  5. Step 5: Solve for x
    x = 347,589,520.37/21,271.98
  6. Step 6: Final answer
    x = 16,340.25

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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.