Home / 30,218.63-41,668.07-20,660.06

Finding the Fourth Proportional to 30,218.63, 41,668.07 and 20,660.06

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Solution

The fourth proportional to 30,218.63, 41,668.07 and 20,660.06 is: 28,487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,218.63 : 41,668.07 = 20,660.06 : x
  2. Step 2: Convert to fraction form
    30,218.63/41,668.07 = 20,660.06/x
  3. Step 3: Cross multiply
    30,218.63x = 41,668.07 × 20,660.06
  4. Step 4: Simplify right side
    30,218.63x = 860,865,060.01
  5. Step 5: Solve for x
    x = 860,865,060.01/30,218.63
  6. Step 6: Final answer
    x = 28,487.90

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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.