Home / 21,191.94-29,241.63-12,692.07

Finding the Fourth Proportional to 21,191.94, 29,241.63 and 12,692.07

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Solution

The fourth proportional to 21,191.94, 29,241.63 and 12,692.07 is: 17,513.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.94 : 29,241.63 = 12,692.07 : x
  2. Step 2: Convert to fraction form
    21,191.94/29,241.63 = 12,692.07/x
  3. Step 3: Cross multiply
    21,191.94x = 29,241.63 × 12,692.07
  4. Step 4: Simplify right side
    21,191.94x = 371,136,814.87
  5. Step 5: Solve for x
    x = 371,136,814.87/21,191.94
  6. Step 6: Final answer
    x = 17,513.11

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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.