Home / 22,206.25-30,643.72-12,135.03

Finding the Fourth Proportional to 22,206.25, 30,643.72 and 12,135.03

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Solution

The fourth proportional to 22,206.25, 30,643.72 and 12,135.03 is: 16,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,206.25 : 30,643.72 = 12,135.03 : x
  2. Step 2: Convert to fraction form
    22,206.25/30,643.72 = 12,135.03/x
  3. Step 3: Cross multiply
    22,206.25x = 30,643.72 × 12,135.03
  4. Step 4: Simplify right side
    22,206.25x = 371,862,488.63
  5. Step 5: Solve for x
    x = 371,862,488.63/22,206.25
  6. Step 6: Final answer
    x = 16,745.85

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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.