Home / 18,172,816.69-25,078,647.08-9,912,915.70

Finding the Fourth Proportional to 18,172,816.69, 25,078,647.08 and 9,912,915.70

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Solution

The fourth proportional to 18,172,816.69, 25,078,647.08 and 9,912,915.70 is: 13,679,910.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,172,816.69 : 25,078,647.08 = 9,912,915.70 : x
  2. Step 2: Convert to fraction form
    18,172,816.69/25,078,647.08 = 9,912,915.70/x
  3. Step 3: Cross multiply
    18,172,816.69x = 25,078,647.08 × 9,912,915.70
  4. Step 4: Simplify right side
    18,172,816.69x = 248,602,514,374,091.12
  5. Step 5: Solve for x
    x = 248,602,514,374,091.12/18,172,816.69
  6. Step 6: Final answer
    x = 13,679,910.97

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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.