Home / 20,151,279.84-30,209,023.20-7,852,395.60

Finding the Fourth Proportional to 20,151,279.84, 30,209,023.20 and 7,852,395.60

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Solution

The fourth proportional to 20,151,279.84, 30,209,023.20 and 7,852,395.60 is: 11,771,619.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,151,279.84 : 30,209,023.20 = 7,852,395.60 : x
  2. Step 2: Convert to fraction form
    20,151,279.84/30,209,023.20 = 7,852,395.60/x
  3. Step 3: Cross multiply
    20,151,279.84x = 30,209,023.20 × 7,852,395.60
  4. Step 4: Simplify right side
    20,151,279.84x = 237,213,200,855,977.91
  5. Step 5: Solve for x
    x = 237,213,200,855,977.91/20,151,279.84
  6. Step 6: Final answer
    x = 11,771,619.61

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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.