Home / 21,069.96-29,075.34-12,581.66

Finding the Fourth Proportional to 21,069.96, 29,075.34 and 12,581.66

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Solution

The fourth proportional to 21,069.96, 29,075.34 and 12,581.66 is: 17,361.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.96 : 29,075.34 = 12,581.66 : x
  2. Step 2: Convert to fraction form
    21,069.96/29,075.34 = 12,581.66/x
  3. Step 3: Cross multiply
    21,069.96x = 29,075.34 × 12,581.66
  4. Step 4: Simplify right side
    21,069.96x = 365,816,042.26
  5. Step 5: Solve for x
    x = 365,816,042.26/21,069.96
  6. Step 6: Final answer
    x = 17,361.97

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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.