Home / 12,909,249.64-17,815,206.18-7,108,431.40

Finding the Fourth Proportional to 12,909,249.64, 17,815,206.18 and 7,108,431.40

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Solution

The fourth proportional to 12,909,249.64, 17,815,206.18 and 7,108,431.40 is: 9,809,878.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909,249.64 : 17,815,206.18 = 7,108,431.40 : x
  2. Step 2: Convert to fraction form
    12,909,249.64/17,815,206.18 = 7,108,431.40/x
  3. Step 3: Cross multiply
    12,909,249.64x = 17,815,206.18 × 7,108,431.40
  4. Step 4: Simplify right side
    12,909,249.64x = 126,638,171,007,386.06
  5. Step 5: Solve for x
    x = 126,638,171,007,386.06/12,909,249.64
  6. Step 6: Final answer
    x = 9,809,878.54

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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.