Home / 20,620,513.56-28,453,145.28-11,917,005.36

Finding the Fourth Proportional to 20,620,513.56, 28,453,145.28 and 11,917,005.36

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Solution

The fourth proportional to 20,620,513.56, 28,453,145.28 and 11,917,005.36 is: 16,443,639.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620,513.56 : 28,453,145.28 = 11,917,005.36 : x
  2. Step 2: Convert to fraction form
    20,620,513.56/28,453,145.28 = 11,917,005.36/x
  3. Step 3: Cross multiply
    20,620,513.56x = 28,453,145.28 × 11,917,005.36
  4. Step 4: Simplify right side
    20,620,513.56x = 339,076,284,810,618.69
  5. Step 5: Solve for x
    x = 339,076,284,810,618.69/20,620,513.56
  6. Step 6: Final answer
    x = 16,443,639.19

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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.