Home / 12,312,390.86-16,991,063.79-6,879,887.18

Finding the Fourth Proportional to 12,312,390.86, 16,991,063.79 and 6,879,887.18

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Solution

The fourth proportional to 12,312,390.86, 16,991,063.79 and 6,879,887.18 is: 9,494,224.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312,390.86 : 16,991,063.79 = 6,879,887.18 : x
  2. Step 2: Convert to fraction form
    12,312,390.86/16,991,063.79 = 6,879,887.18/x
  3. Step 3: Cross multiply
    12,312,390.86x = 16,991,063.79 × 6,879,887.18
  4. Step 4: Simplify right side
    12,312,390.86x = 116,896,601,943,383.20
  5. Step 5: Solve for x
    x = 116,896,601,943,383.20/12,312,390.86
  6. Step 6: Final answer
    x = 9,494,224.42

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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.