Home / 21,941.67-30,279.51-11,870.10

Finding the Fourth Proportional to 21,941.67, 30,279.51 and 11,870.10

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Solution

The fourth proportional to 21,941.67, 30,279.51 and 11,870.10 is: 16,380.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,941.67 : 30,279.51 = 11,870.10 : x
  2. Step 2: Convert to fraction form
    21,941.67/30,279.51 = 11,870.10/x
  3. Step 3: Cross multiply
    21,941.67x = 30,279.51 × 11,870.10
  4. Step 4: Simplify right side
    21,941.67x = 359,420,811.65
  5. Step 5: Solve for x
    x = 359,420,811.65/21,941.67
  6. Step 6: Final answer
    x = 16,380.74

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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.