Home / 21,939.99-30,277.26-11,868.52

Finding the Fourth Proportional to 21,939.99, 30,277.26 and 11,868.52

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Solution

The fourth proportional to 21,939.99, 30,277.26 and 11,868.52 is: 16,378.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.99 : 30,277.26 = 11,868.52 : x
  2. Step 2: Convert to fraction form
    21,939.99/30,277.26 = 11,868.52/x
  3. Step 3: Cross multiply
    21,939.99x = 30,277.26 × 11,868.52
  4. Step 4: Simplify right side
    21,939.99x = 359,346,265.86
  5. Step 5: Solve for x
    x = 359,346,265.86/21,939.99
  6. Step 6: Final answer
    x = 16,378.60

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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.