Home / 21,941.89-30,279.84-11,870.29

Finding the Fourth Proportional to 21,941.89, 30,279.84 and 11,870.29

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Solution

The fourth proportional to 21,941.89, 30,279.84 and 11,870.29 is: 16,381.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,941.89 : 30,279.84 = 11,870.29 : x
  2. Step 2: Convert to fraction form
    21,941.89/30,279.84 = 11,870.29/x
  3. Step 3: Cross multiply
    21,941.89x = 30,279.84 × 11,870.29
  4. Step 4: Simplify right side
    21,941.89x = 359,430,481.95
  5. Step 5: Solve for x
    x = 359,430,481.95/21,941.89
  6. Step 6: Final answer
    x = 16,381.02

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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.