Home / 12,889,648.88-17,788,171.92-7,088,879.60

Finding the Fourth Proportional to 12,889,648.88, 17,788,171.92 and 7,088,879.60

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Solution

The fourth proportional to 12,889,648.88, 17,788,171.92 and 7,088,879.60 is: 9,782,904.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889,648.88 : 17,788,171.92 = 7,088,879.60 : x
  2. Step 2: Convert to fraction form
    12,889,648.88/17,788,171.92 = 7,088,879.60/x
  3. Step 3: Cross multiply
    12,889,648.88x = 17,788,171.92 × 7,088,879.60
  4. Step 4: Simplify right side
    12,889,648.88x = 126,098,209,044,980.84
  5. Step 5: Solve for x
    x = 126,098,209,044,980.84/12,889,648.88
  6. Step 6: Final answer
    x = 9,782,904.89

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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.