Home / 20,784,102.90-31,168,400.51-7,133,375.60

Finding the Fourth Proportional to 20,784,102.90, 31,168,400.51 and 7,133,375.60

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Solution

The fourth proportional to 20,784,102.90, 31,168,400.51 and 7,133,375.60 is: 10,697,402.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784,102.90 : 31,168,400.51 = 7,133,375.60 : x
  2. Step 2: Convert to fraction form
    20,784,102.90/31,168,400.51 = 7,133,375.60/x
  3. Step 3: Cross multiply
    20,784,102.90x = 31,168,400.51 × 7,133,375.60
  4. Step 4: Simplify right side
    20,784,102.90x = 222,335,907,533,219.56
  5. Step 5: Solve for x
    x = 222,335,907,533,219.56/20,784,102.90
  6. Step 6: Final answer
    x = 10,697,402.18

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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.