Home / 18,887,897.40-28,328,676.82-5,242,430.14

Finding the Fourth Proportional to 18,887,897.40, 28,328,676.82 and 5,242,430.14

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Solution

The fourth proportional to 18,887,897.40, 28,328,676.82 and 5,242,430.14 is: 7,862,765.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887,897.40 : 28,328,676.82 = 5,242,430.14 : x
  2. Step 2: Convert to fraction form
    18,887,897.40/28,328,676.82 = 5,242,430.14/x
  3. Step 3: Cross multiply
    18,887,897.40x = 28,328,676.82 × 5,242,430.14
  4. Step 4: Simplify right side
    18,887,897.40x = 148,511,109,187,487.34
  5. Step 5: Solve for x
    x = 148,511,109,187,487.34/18,887,897.40
  6. Step 6: Final answer
    x = 7,862,765.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.