Home / 20,617,686.49-28,450,748.05-11,916,422.68

Finding the Fourth Proportional to 20,617,686.49, 28,450,748.05 and 11,916,422.68

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Solution

The fourth proportional to 20,617,686.49, 28,450,748.05 and 11,916,422.68 is: 16,443,704.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617,686.49 : 28,450,748.05 = 11,916,422.68 : x
  2. Step 2: Convert to fraction form
    20,617,686.49/28,450,748.05 = 11,916,422.68/x
  3. Step 3: Cross multiply
    20,617,686.49x = 28,450,748.05 × 11,916,422.68
  4. Step 4: Simplify right side
    20,617,686.49x = 339,031,139,345,442.88
  5. Step 5: Solve for x
    x = 339,031,139,345,442.88/20,617,686.49
  6. Step 6: Final answer
    x = 16,443,704.27

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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.