Home / 21,941.06-30,278.57-11,869.47

Finding the Fourth Proportional to 21,941.06, 30,278.57 and 11,869.47

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Solution

The fourth proportional to 21,941.06, 30,278.57 and 11,869.47 is: 16,379.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,941.06 : 30,278.57 = 11,869.47 : x
  2. Step 2: Convert to fraction form
    21,941.06/30,278.57 = 11,869.47/x
  3. Step 3: Cross multiply
    21,941.06x = 30,278.57 × 11,869.47
  4. Step 4: Simplify right side
    21,941.06x = 359,390,575.68
  5. Step 5: Solve for x
    x = 359,390,575.68/21,941.06
  6. Step 6: Final answer
    x = 16,379.82

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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.