Home / 21,405,987.12-29,540,281.32-11,616,431.40

Finding the Fourth Proportional to 21,405,987.12, 29,540,281.32 and 11,616,431.40

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Solution

The fourth proportional to 21,405,987.12, 29,540,281.32 and 11,616,431.40 is: 16,030,685.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405,987.12 : 29,540,281.32 = 11,616,431.40 : x
  2. Step 2: Convert to fraction form
    21,405,987.12/29,540,281.32 = 11,616,431.40/x
  3. Step 3: Cross multiply
    21,405,987.12x = 29,540,281.32 × 11,616,431.40
  4. Step 4: Simplify right side
    21,405,987.12x = 343,152,651,490,481.44
  5. Step 5: Solve for x
    x = 343,152,651,490,481.44/21,405,987.12
  6. Step 6: Final answer
    x = 16,030,685.69

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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.