Home / 21,959.45-30,303.78-11,887.67

Finding the Fourth Proportional to 21,959.45, 30,303.78 and 11,887.67

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Solution

The fourth proportional to 21,959.45, 30,303.78 and 11,887.67 is: 16,404.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.45 : 30,303.78 = 11,887.67 : x
  2. Step 2: Convert to fraction form
    21,959.45/30,303.78 = 11,887.67/x
  3. Step 3: Cross multiply
    21,959.45x = 30,303.78 × 11,887.67
  4. Step 4: Simplify right side
    21,959.45x = 360,241,286.27
  5. Step 5: Solve for x
    x = 360,241,286.27/21,959.45
  6. Step 6: Final answer
    x = 16,404.84

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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.