Home / 12,879,331.54-17,773,903.65-7,078,318.90

Finding the Fourth Proportional to 12,879,331.54, 17,773,903.65 and 7,078,318.90

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Solution

The fourth proportional to 12,879,331.54, 17,773,903.65 and 7,078,318.90 is: 9,768,314.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879,331.54 : 17,773,903.65 = 7,078,318.90 : x
  2. Step 2: Convert to fraction form
    12,879,331.54/17,773,903.65 = 7,078,318.90/x
  3. Step 3: Cross multiply
    12,879,331.54x = 17,773,903.65 × 7,078,318.90
  4. Step 4: Simplify right side
    12,879,331.54x = 125,809,358,132,573.98
  5. Step 5: Solve for x
    x = 125,809,358,132,573.98/12,879,331.54
  6. Step 6: Final answer
    x = 9,768,314.27

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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.