Home / 71,589.16-107,392.38-18,999.64

Finding the Fourth Proportional to 71,589.16, 107,392.38 and 18,999.64

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Solution

The fourth proportional to 71,589.16, 107,392.38 and 18,999.64 is: 28,501.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,589.16 : 107,392.38 = 18,999.64 : x
  2. Step 2: Convert to fraction form
    71,589.16/107,392.38 = 18,999.64/x
  3. Step 3: Cross multiply
    71,589.16x = 107,392.38 × 18,999.64
  4. Step 4: Simplify right side
    71,589.16x = 2,040,416,558.74
  5. Step 5: Solve for x
    x = 2,040,416,558.74/71,589.16
  6. Step 6: Final answer
    x = 28,501.75

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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.