Home / 21,309,479.88-29,409,958.80-12,018,958.08

Finding the Fourth Proportional to 21,309,479.88, 29,409,958.80 and 12,018,958.08

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Solution

The fourth proportional to 21,309,479.88, 29,409,958.80 and 12,018,958.08 is: 16,587,784.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,309,479.88 : 29,409,958.80 = 12,018,958.08 : x
  2. Step 2: Convert to fraction form
    21,309,479.88/29,409,958.80 = 12,018,958.08/x
  3. Step 3: Cross multiply
    21,309,479.88x = 29,409,958.80 × 12,018,958.08
  4. Step 4: Simplify right side
    21,309,479.88x = 353,477,061,951,727.12
  5. Step 5: Solve for x
    x = 353,477,061,951,727.12/21,309,479.88
  6. Step 6: Final answer
    x = 16,587,784.59

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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.