Home / 22,051.88-30,431.98-11,980.36

Finding the Fourth Proportional to 22,051.88, 30,431.98 and 11,980.36

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Solution

The fourth proportional to 22,051.88, 30,431.98 and 11,980.36 is: 16,533.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,051.88 : 30,431.98 = 11,980.36 : x
  2. Step 2: Convert to fraction form
    22,051.88/30,431.98 = 11,980.36/x
  3. Step 3: Cross multiply
    22,051.88x = 30,431.98 × 11,980.36
  4. Step 4: Simplify right side
    22,051.88x = 364,586,075.91
  5. Step 5: Solve for x
    x = 364,586,075.91/22,051.88
  6. Step 6: Final answer
    x = 16,533.11

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Half scale
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Double scale
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Similar ratio
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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.