Home / 21,163.95-29,206.64-11,603.21

Finding the Fourth Proportional to 21,163.95, 29,206.64 and 11,603.21

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Solution

The fourth proportional to 21,163.95, 29,206.64 and 11,603.21 is: 16,012.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163.95 : 29,206.64 = 11,603.21 : x
  2. Step 2: Convert to fraction form
    21,163.95/29,206.64 = 11,603.21/x
  3. Step 3: Cross multiply
    21,163.95x = 29,206.64 × 11,603.21
  4. Step 4: Simplify right side
    21,163.95x = 338,890,660.29
  5. Step 5: Solve for x
    x = 338,890,660.29/21,163.95
  6. Step 6: Final answer
    x = 16,012.64

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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.