Home / 28,420,663.50-42,614,676.68-11,128,618.37

Finding the Fourth Proportional to 28,420,663.50, 42,614,676.68 and 11,128,618.37

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Solution

The fourth proportional to 28,420,663.50, 42,614,676.68 and 11,128,618.37 is: 16,686,537.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,420,663.50 : 42,614,676.68 = 11,128,618.37 : x
  2. Step 2: Convert to fraction form
    28,420,663.50/42,614,676.68 = 11,128,618.37/x
  3. Step 3: Cross multiply
    28,420,663.50x = 42,614,676.68 × 11,128,618.37
  4. Step 4: Simplify right side
    28,420,663.50x = 474,242,473,463,942.12
  5. Step 5: Solve for x
    x = 474,242,473,463,942.12/28,420,663.50
  6. Step 6: Final answer
    x = 16,686,537.72

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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.