Home / 21,641.72-29,873.07-12,692.30

Finding the Fourth Proportional to 21,641.72, 29,873.07 and 12,692.30

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Solution

The fourth proportional to 21,641.72, 29,873.07 and 12,692.30 is: 17,519.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,641.72 : 29,873.07 = 12,692.30 : x
  2. Step 2: Convert to fraction form
    21,641.72/29,873.07 = 12,692.30/x
  3. Step 3: Cross multiply
    21,641.72x = 29,873.07 × 12,692.30
  4. Step 4: Simplify right side
    21,641.72x = 379,157,817.00
  5. Step 5: Solve for x
    x = 379,157,817.00/21,641.72
  6. Step 6: Final answer
    x = 17,519.77

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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.