Home / 21,107.64-29,127.26-11,545.73

Finding the Fourth Proportional to 21,107.64, 29,127.26 and 11,545.73

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Solution

The fourth proportional to 21,107.64, 29,127.26 and 11,545.73 is: 15,932.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.64 : 29,127.26 = 11,545.73 : x
  2. Step 2: Convert to fraction form
    21,107.64/29,127.26 = 11,545.73/x
  3. Step 3: Cross multiply
    21,107.64x = 29,127.26 × 11,545.73
  4. Step 4: Simplify right side
    21,107.64x = 336,295,276.23
  5. Step 5: Solve for x
    x = 336,295,276.23/21,107.64
  6. Step 6: Final answer
    x = 15,932.40

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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.