Home / 18,405,128.26-25,400,213.36-10,145,171.91

Finding the Fourth Proportional to 18,405,128.26, 25,400,213.36 and 10,145,171.91

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Solution

The fourth proportional to 18,405,128.26, 25,400,213.36 and 10,145,171.91 is: 14,000,963.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,405,128.26 : 25,400,213.36 = 10,145,171.91 : x
  2. Step 2: Convert to fraction form
    18,405,128.26/25,400,213.36 = 10,145,171.91/x
  3. Step 3: Cross multiply
    18,405,128.26x = 25,400,213.36 × 10,145,171.91
  4. Step 4: Simplify right side
    18,405,128.26x = 257,689,531,100,653.38
  5. Step 5: Solve for x
    x = 257,689,531,100,653.38/18,405,128.26
  6. Step 6: Final answer
    x = 14,000,963.62

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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.