Home / 21,949.70-30,290.40-11,877.93

Finding the Fourth Proportional to 21,949.70, 30,290.40 and 11,877.93

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Solution

The fourth proportional to 21,949.70, 30,290.40 and 11,877.93 is: 16,391.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,949.70 : 30,290.40 = 11,877.93 : x
  2. Step 2: Convert to fraction form
    21,949.70/30,290.40 = 11,877.93/x
  3. Step 3: Cross multiply
    21,949.70x = 30,290.40 × 11,877.93
  4. Step 4: Simplify right side
    21,949.70x = 359,787,250.87
  5. Step 5: Solve for x
    x = 359,787,250.87/21,949.70
  6. Step 6: Final answer
    x = 16,391.45

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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.