Home / 20,645,536.32-28,489,226.40-11,477,620.80

Finding the Fourth Proportional to 20,645,536.32, 28,489,226.40 and 11,477,620.80

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Solution

The fourth proportional to 20,645,536.32, 28,489,226.40 and 11,477,620.80 is: 15,838,219.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,645,536.32 : 28,489,226.40 = 11,477,620.80 : x
  2. Step 2: Convert to fraction form
    20,645,536.32/28,489,226.40 = 11,477,620.80/x
  3. Step 3: Cross multiply
    20,645,536.32x = 28,489,226.40 × 11,477,620.80
  4. Step 4: Simplify right side
    20,645,536.32x = 326,988,537,504,549.12
  5. Step 5: Solve for x
    x = 326,988,537,504,549.12/20,645,536.32
  6. Step 6: Final answer
    x = 15,838,219.58

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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.