Home / 21,780,431.28-30,055,914-11,990,665.26

Finding the Fourth Proportional to 21,780,431.28, 30,055,914 and 11,990,665.26

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Solution

The fourth proportional to 21,780,431.28, 30,055,914 and 11,990,665.26 is: 16,546,522.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,780,431.28 : 30,055,914 = 11,990,665.26 : x
  2. Step 2: Convert to fraction form
    21,780,431.28/30,055,914 = 11,990,665.26/x
  3. Step 3: Cross multiply
    21,780,431.28x = 30,055,914 × 11,990,665.26
  4. Step 4: Simplify right side
    21,780,431.28x = 360,390,403,857,347.62
  5. Step 5: Solve for x
    x = 360,390,403,857,347.62/21,780,431.28
  6. Step 6: Final answer
    x = 16,546,522.85

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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.