Home / 12,999,128.82-17,938,578.71-7,197,785.97

Finding the Fourth Proportional to 12,999,128.82, 17,938,578.71 and 7,197,785.97

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Solution

The fourth proportional to 12,999,128.82, 17,938,578.71 and 7,197,785.97 is: 9,932,823.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999,128.82 : 17,938,578.71 = 7,197,785.97 : x
  2. Step 2: Convert to fraction form
    12,999,128.82/17,938,578.71 = 7,197,785.97/x
  3. Step 3: Cross multiply
    12,999,128.82x = 17,938,578.71 × 7,197,785.97
  4. Step 4: Simplify right side
    12,999,128.82x = 129,118,050,124,589.75
  5. Step 5: Solve for x
    x = 129,118,050,124,589.75/12,999,128.82
  6. Step 6: Final answer
    x = 9,932,823.34

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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.