Home / 21,107.34-29,127.24-11,675.30

Finding the Fourth Proportional to 21,107.34, 29,127.24 and 11,675.30

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Solution

The fourth proportional to 21,107.34, 29,127.24 and 11,675.30 is: 16,111.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.34 : 29,127.24 = 11,675.30 : x
  2. Step 2: Convert to fraction form
    21,107.34/29,127.24 = 11,675.30/x
  3. Step 3: Cross multiply
    21,107.34x = 29,127.24 × 11,675.30
  4. Step 4: Simplify right side
    21,107.34x = 340,069,265.17
  5. Step 5: Solve for x
    x = 340,069,265.17/21,107.34
  6. Step 6: Final answer
    x = 16,111.42

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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.