Home / 21,999,921.68-30,360,215.40-12,210,993.92

Finding the Fourth Proportional to 21,999,921.68, 30,360,215.40 and 12,210,993.92

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Solution

The fourth proportional to 21,999,921.68, 30,360,215.40 and 12,210,993.92 is: 16,851,351.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999,921.68 : 30,360,215.40 = 12,210,993.92 : x
  2. Step 2: Convert to fraction form
    21,999,921.68/30,360,215.40 = 12,210,993.92/x
  3. Step 3: Cross multiply
    21,999,921.68x = 30,360,215.40 × 12,210,993.92
  4. Step 4: Simplify right side
    21,999,921.68x = 370,728,405,659,290.38
  5. Step 5: Solve for x
    x = 370,728,405,659,290.38/21,999,921.68
  6. Step 6: Final answer
    x = 16,851,351.16

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1.5x scale

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.