Home / 28,324,536.80-42,325,561.22-21,267,647.60

Finding the Fourth Proportional to 28,324,536.80, 42,325,561.22 and 21,267,647.60

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Solution

The fourth proportional to 28,324,536.80, 42,325,561.22 and 21,267,647.60 is: 31,780,400.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,324,536.80 : 42,325,561.22 = 21,267,647.60 : x
  2. Step 2: Convert to fraction form
    28,324,536.80/42,325,561.22 = 21,267,647.60/x
  3. Step 3: Cross multiply
    28,324,536.80x = 42,325,561.22 × 21,267,647.60
  4. Step 4: Simplify right side
    28,324,536.80x = 900,165,120,499,186.12
  5. Step 5: Solve for x
    x = 900,165,120,499,186.12/28,324,536.80
  6. Step 6: Final answer
    x = 31,780,400.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.