Home / 20,505,104.64-30,762,322.56-10,915,430.40

Finding the Fourth Proportional to 20,505,104.64, 30,762,322.56 and 10,915,430.40

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Solution

The fourth proportional to 20,505,104.64, 30,762,322.56 and 10,915,430.40 is: 16,375,629.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505,104.64 : 30,762,322.56 = 10,915,430.40 : x
  2. Step 2: Convert to fraction form
    20,505,104.64/30,762,322.56 = 10,915,430.40/x
  3. Step 3: Cross multiply
    20,505,104.64x = 30,762,322.56 × 10,915,430.40
  4. Step 4: Simplify right side
    20,505,104.64x = 335,783,990,846,029.81
  5. Step 5: Solve for x
    x = 335,783,990,846,029.81/20,505,104.64
  6. Step 6: Final answer
    x = 16,375,629.23

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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.