Home / 30,416.10-41,971.80-16,986.56

Finding the Fourth Proportional to 30,416.10, 41,971.80 and 16,986.56

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Solution

The fourth proportional to 30,416.10, 41,971.80 and 16,986.56 is: 23,440.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,416.10 : 41,971.80 = 16,986.56 : x
  2. Step 2: Convert to fraction form
    30,416.10/41,971.80 = 16,986.56/x
  3. Step 3: Cross multiply
    30,416.10x = 41,971.80 × 16,986.56
  4. Step 4: Simplify right side
    30,416.10x = 712,956,499.01
  5. Step 5: Solve for x
    x = 712,956,499.01/30,416.10
  6. Step 6: Final answer
    x = 23,440.10

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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.