Home / 12,909,513.69-17,815,520.81-7,108,503.18

Finding the Fourth Proportional to 12,909,513.69, 17,815,520.81 and 7,108,503.18

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Solution

The fourth proportional to 12,909,513.69, 17,815,520.81 and 7,108,503.18 is: 9,809,950.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909,513.69 : 17,815,520.81 = 7,108,503.18 : x
  2. Step 2: Convert to fraction form
    12,909,513.69/17,815,520.81 = 7,108,503.18/x
  3. Step 3: Cross multiply
    12,909,513.69x = 17,815,520.81 × 7,108,503.18
  4. Step 4: Simplify right side
    12,909,513.69x = 126,641,686,331,241.16
  5. Step 5: Solve for x
    x = 126,641,686,331,241.16/12,909,513.69
  6. Step 6: Final answer
    x = 9,809,950.19

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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.