Home / 21,950.26-30,291.35-11,878.70

Finding the Fourth Proportional to 21,950.26, 30,291.35 and 11,878.70

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Solution

The fourth proportional to 21,950.26, 30,291.35 and 11,878.70 is: 16,392.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,950.26 : 30,291.35 = 11,878.70 : x
  2. Step 2: Convert to fraction form
    21,950.26/30,291.35 = 11,878.70/x
  3. Step 3: Cross multiply
    21,950.26x = 30,291.35 × 11,878.70
  4. Step 4: Simplify right side
    21,950.26x = 359,821,737.48
  5. Step 5: Solve for x
    x = 359,821,737.48/21,950.26
  6. Step 6: Final answer
    x = 16,392.60

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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.