Home / 21,588.81-29,796.75-12,157.44

Finding the Fourth Proportional to 21,588.81, 29,796.75 and 12,157.44

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Solution

The fourth proportional to 21,588.81, 29,796.75 and 12,157.44 is: 16,779.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,588.81 : 29,796.75 = 12,157.44 : x
  2. Step 2: Convert to fraction form
    21,588.81/29,796.75 = 12,157.44/x
  3. Step 3: Cross multiply
    21,588.81x = 29,796.75 × 12,157.44
  4. Step 4: Simplify right side
    21,588.81x = 362,252,200.32
  5. Step 5: Solve for x
    x = 362,252,200.32/21,588.81
  6. Step 6: Final answer
    x = 16,779.63

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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.