Home / 21,021.48-31,525.20-16,346.70

Finding the Fourth Proportional to 21,021.48, 31,525.20 and 16,346.70

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Solution

The fourth proportional to 21,021.48, 31,525.20 and 16,346.70 is: 24,514.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.48 : 31,525.20 = 16,346.70 : x
  2. Step 2: Convert to fraction form
    21,021.48/31,525.20 = 16,346.70/x
  3. Step 3: Cross multiply
    21,021.48x = 31,525.20 × 16,346.70
  4. Step 4: Simplify right side
    21,021.48x = 515,332,986.84
  5. Step 5: Solve for x
    x = 515,332,986.84/21,021.48
  6. Step 6: Final answer
    x = 24,514.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.