Home / 21,107.26-29,127-11,675.62

Finding the Fourth Proportional to 21,107.26, 29,127 and 11,675.62

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Solution

The fourth proportional to 21,107.26, 29,127 and 11,675.62 is: 16,111.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.26 : 29,127 = 11,675.62 : x
  2. Step 2: Convert to fraction form
    21,107.26/29,127 = 11,675.62/x
  3. Step 3: Cross multiply
    21,107.26x = 29,127 × 11,675.62
  4. Step 4: Simplify right side
    21,107.26x = 340,075,783.74
  5. Step 5: Solve for x
    x = 340,075,783.74/21,107.26
  6. Step 6: Final answer
    x = 16,111.79

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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.