Home / 30,306.88-41,811.90-18,971.68

Finding the Fourth Proportional to 30,306.88, 41,811.90 and 18,971.68

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Solution

The fourth proportional to 30,306.88, 41,811.90 and 18,971.68 is: 26,173.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,306.88 : 41,811.90 = 18,971.68 : x
  2. Step 2: Convert to fraction form
    30,306.88/41,811.90 = 18,971.68/x
  3. Step 3: Cross multiply
    30,306.88x = 41,811.90 × 18,971.68
  4. Step 4: Simplify right side
    30,306.88x = 793,241,986.99
  5. Step 5: Solve for x
    x = 793,241,986.99/30,306.88
  6. Step 6: Final answer
    x = 26,173.66

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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.