Home / 20,918,166.98-31,378,840.31-8,133,178.82

Finding the Fourth Proportional to 20,918,166.98, 31,378,840.31 and 8,133,178.82

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Solution

The fourth proportional to 20,918,166.98, 31,378,840.31 and 8,133,178.82 is: 12,200,386.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918,166.98 : 31,378,840.31 = 8,133,178.82 : x
  2. Step 2: Convert to fraction form
    20,918,166.98/31,378,840.31 = 8,133,178.82/x
  3. Step 3: Cross multiply
    20,918,166.98x = 31,378,840.31 × 8,133,178.82
  4. Step 4: Simplify right side
    20,918,166.98x = 255,209,719,405,454.22
  5. Step 5: Solve for x
    x = 255,209,719,405,454.22/20,918,166.98
  6. Step 6: Final answer
    x = 12,200,386.37

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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.