Home / 12,538,316.43-17,286,858.78-8,120,235.39

Finding the Fourth Proportional to 12,538,316.43, 17,286,858.78 and 8,120,235.39

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Solution

The fourth proportional to 12,538,316.43, 17,286,858.78 and 8,120,235.39 is: 11,195,551.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538,316.43 : 17,286,858.78 = 8,120,235.39 : x
  2. Step 2: Convert to fraction form
    12,538,316.43/17,286,858.78 = 8,120,235.39/x
  3. Step 3: Cross multiply
    12,538,316.43x = 17,286,858.78 × 8,120,235.39
  4. Step 4: Simplify right side
    12,538,316.43x = 140,373,362,566,386.31
  5. Step 5: Solve for x
    x = 140,373,362,566,386.31/12,538,316.43
  6. Step 6: Final answer
    x = 11,195,551.12

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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.