Home / 20,927,221.09-28,879,577.04-12,107,910.31

Finding the Fourth Proportional to 20,927,221.09, 28,879,577.04 and 12,107,910.31

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Solution

The fourth proportional to 20,927,221.09, 28,879,577.04 and 12,107,910.31 is: 16,708,923.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927,221.09 : 28,879,577.04 = 12,107,910.31 : x
  2. Step 2: Convert to fraction form
    20,927,221.09/28,879,577.04 = 12,107,910.31/x
  3. Step 3: Cross multiply
    20,927,221.09x = 28,879,577.04 × 12,107,910.31
  4. Step 4: Simplify right side
    20,927,221.09x = 349,671,328,591,055.31
  5. Step 5: Solve for x
    x = 349,671,328,591,055.31/20,927,221.09
  6. Step 6: Final answer
    x = 16,708,923.13

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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.