Home / 21,876,568.09-30,190,272.69-12,087,642.90

Finding the Fourth Proportional to 21,876,568.09, 30,190,272.69 and 12,087,642.90

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Solution

The fourth proportional to 21,876,568.09, 30,190,272.69 and 12,087,642.90 is: 16,681,283.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,876,568.09 : 30,190,272.69 = 12,087,642.90 : x
  2. Step 2: Convert to fraction form
    21,876,568.09/30,190,272.69 = 12,087,642.90/x
  3. Step 3: Cross multiply
    21,876,568.09x = 30,190,272.69 × 12,087,642.90
  4. Step 4: Simplify right side
    21,876,568.09x = 364,929,235,330,342.44
  5. Step 5: Solve for x
    x = 364,929,235,330,342.44/21,876,568.09
  6. Step 6: Final answer
    x = 16,681,283.55

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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.