Home / 21,022,103.65-29,005,012.86-12,315,595.90

Finding the Fourth Proportional to 21,022,103.65, 29,005,012.86 and 12,315,595.90

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Solution

The fourth proportional to 21,022,103.65, 29,005,012.86 and 12,315,595.90 is: 16,992,305.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022,103.65 : 29,005,012.86 = 12,315,595.90 : x
  2. Step 2: Convert to fraction form
    21,022,103.65/29,005,012.86 = 12,315,595.90/x
  3. Step 3: Cross multiply
    21,022,103.65x = 29,005,012.86 × 12,315,595.90
  4. Step 4: Simplify right side
    21,022,103.65x = 357,214,017,458,063.25
  5. Step 5: Solve for x
    x = 357,214,017,458,063.25/21,022,103.65
  6. Step 6: Final answer
    x = 16,992,305.97

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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.