Home / 20,687,889.88-28,548,232.86-11,395,259.91

Finding the Fourth Proportional to 20,687,889.88, 28,548,232.86 and 11,395,259.91

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Solution

The fourth proportional to 20,687,889.88, 28,548,232.86 and 11,395,259.91 is: 15,724,877.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,889.88 : 28,548,232.86 = 11,395,259.91 : x
  2. Step 2: Convert to fraction form
    20,687,889.88/28,548,232.86 = 11,395,259.91/x
  3. Step 3: Cross multiply
    20,687,889.88x = 28,548,232.86 × 11,395,259.91
  4. Step 4: Simplify right side
    20,687,889.88x = 325,314,533,410,902.62
  5. Step 5: Solve for x
    x = 325,314,533,410,902.62/20,687,889.88
  6. Step 6: Final answer
    x = 15,724,877.47

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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.