Home / 30,339.21-41,868.30-16,911.31

Finding the Fourth Proportional to 30,339.21, 41,868.30 and 16,911.31

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Solution

The fourth proportional to 30,339.21, 41,868.30 and 16,911.31 is: 23,337.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,339.21 : 41,868.30 = 16,911.31 : x
  2. Step 2: Convert to fraction form
    30,339.21/41,868.30 = 16,911.31/x
  3. Step 3: Cross multiply
    30,339.21x = 41,868.30 × 16,911.31
  4. Step 4: Simplify right side
    30,339.21x = 708,047,715.92
  5. Step 5: Solve for x
    x = 708,047,715.92/30,339.21
  6. Step 6: Final answer
    x = 23,337.71

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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.