Home / 12,887,707.69-17,785,675.20-7,994,506.60

Finding the Fourth Proportional to 12,887,707.69, 17,785,675.20 and 7,994,506.60

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Solution

The fourth proportional to 12,887,707.69, 17,785,675.20 and 7,994,506.60 is: 11,032,815.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887,707.69 : 17,785,675.20 = 7,994,506.60 : x
  2. Step 2: Convert to fraction form
    12,887,707.69/17,785,675.20 = 7,994,506.60/x
  3. Step 3: Cross multiply
    12,887,707.69x = 17,785,675.20 × 7,994,506.60
  4. Step 4: Simplify right side
    12,887,707.69x = 142,187,697,771,856.31
  5. Step 5: Solve for x
    x = 142,187,697,771,856.31/12,887,707.69
  6. Step 6: Final answer
    x = 11,032,815.24

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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.