Home / 20,586,164.56-28,412,314.32-11,421,759.76

Finding the Fourth Proportional to 20,586,164.56, 28,412,314.32 and 11,421,759.76

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Solution

The fourth proportional to 20,586,164.56, 28,412,314.32 and 11,421,759.76 is: 15,763,918.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586,164.56 : 28,412,314.32 = 11,421,759.76 : x
  2. Step 2: Convert to fraction form
    20,586,164.56/28,412,314.32 = 11,421,759.76/x
  3. Step 3: Cross multiply
    20,586,164.56x = 28,412,314.32 × 11,421,759.76
  4. Step 4: Simplify right side
    20,586,164.56x = 324,518,628,388,647.75
  5. Step 5: Solve for x
    x = 324,518,628,388,647.75/20,586,164.56
  6. Step 6: Final answer
    x = 15,763,918.89

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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.