Home / 13,667,090.68-18,860,978.81-7,555,912.84

Finding the Fourth Proportional to 13,667,090.68, 18,860,978.81 and 7,555,912.84

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Solution

The fourth proportional to 13,667,090.68, 18,860,978.81 and 7,555,912.84 is: 10,427,377.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667,090.68 : 18,860,978.81 = 7,555,912.84 : x
  2. Step 2: Convert to fraction form
    13,667,090.68/18,860,978.81 = 7,555,912.84/x
  3. Step 3: Cross multiply
    13,667,090.68x = 18,860,978.81 × 7,555,912.84
  4. Step 4: Simplify right side
    13,667,090.68x = 142,511,911,927,667.34
  5. Step 5: Solve for x
    x = 142,511,911,927,667.34/13,667,090.68
  6. Step 6: Final answer
    x = 10,427,377.36

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1.5x scale

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.