Home / 20,918,164.48-31,378,836.56-8,133,176.32

Finding the Fourth Proportional to 20,918,164.48, 31,378,836.56 and 8,133,176.32

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Solution

The fourth proportional to 20,918,164.48, 31,378,836.56 and 8,133,176.32 is: 12,200,382.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918,164.48 : 31,378,836.56 = 8,133,176.32 : x
  2. Step 2: Convert to fraction form
    20,918,164.48/31,378,836.56 = 8,133,176.32/x
  3. Step 3: Cross multiply
    20,918,164.48x = 31,378,836.56 × 8,133,176.32
  4. Step 4: Simplify right side
    20,918,164.48x = 255,209,610,458,942.25
  5. Step 5: Solve for x
    x = 255,209,610,458,942.25/20,918,164.48
  6. Step 6: Final answer
    x = 12,200,382.62

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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.