Home / 21,940.03-30,277.12-11,868.45

Finding the Fourth Proportional to 21,940.03, 30,277.12 and 11,868.45

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Solution

The fourth proportional to 21,940.03, 30,277.12 and 11,868.45 is: 16,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,940.03 : 30,277.12 = 11,868.45 : x
  2. Step 2: Convert to fraction form
    21,940.03/30,277.12 = 11,868.45/x
  3. Step 3: Cross multiply
    21,940.03x = 30,277.12 × 11,868.45
  4. Step 4: Simplify right side
    21,940.03x = 359,342,484.86
  5. Step 5: Solve for x
    x = 359,342,484.86/21,940.03
  6. Step 6: Final answer
    x = 16,378.40

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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.