Home / 18,739.26-25,861.19-10,782.71

Finding the Fourth Proportional to 18,739.26, 25,861.19 and 10,782.71

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Solution

The fourth proportional to 18,739.26, 25,861.19 and 10,782.71 is: 14,880.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.26 : 25,861.19 = 10,782.71 : x
  2. Step 2: Convert to fraction form
    18,739.26/25,861.19 = 10,782.71/x
  3. Step 3: Cross multiply
    18,739.26x = 25,861.19 × 10,782.71
  4. Step 4: Simplify right side
    18,739.26x = 278,853,528.81
  5. Step 5: Solve for x
    x = 278,853,528.81/18,739.26
  6. Step 6: Final answer
    x = 14,880.71

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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.