Home / 21,999,919.68-30,360,212.64-12,210,991.92

Finding the Fourth Proportional to 21,999,919.68, 30,360,212.64 and 12,210,991.92

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Solution

The fourth proportional to 21,999,919.68, 30,360,212.64 and 12,210,991.92 is: 16,851,348.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999,919.68 : 30,360,212.64 = 12,210,991.92 : x
  2. Step 2: Convert to fraction form
    21,999,919.68/30,360,212.64 = 12,210,991.92/x
  3. Step 3: Cross multiply
    21,999,919.68x = 30,360,212.64 × 12,210,991.92
  4. Step 4: Simplify right side
    21,999,919.68x = 370,728,311,236,521.88
  5. Step 5: Solve for x
    x = 370,728,311,236,521.88/21,999,919.68
  6. Step 6: Final answer
    x = 16,851,348.40

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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.