Home / 28,485,742.80-39,310,271.86-15,433,326.12

Finding the Fourth Proportional to 28,485,742.80, 39,310,271.86 and 15,433,326.12

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Solution

The fourth proportional to 28,485,742.80, 39,310,271.86 and 15,433,326.12 is: 21,297,961.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,485,742.80 : 39,310,271.86 = 15,433,326.12 : x
  2. Step 2: Convert to fraction form
    28,485,742.80/39,310,271.86 = 15,433,326.12/x
  3. Step 3: Cross multiply
    28,485,742.80x = 39,310,271.86 × 15,433,326.12
  4. Step 4: Simplify right side
    28,485,742.80x = 606,688,245,481,239
  5. Step 5: Solve for x
    x = 606,688,245,481,239/28,485,742.80
  6. Step 6: Final answer
    x = 21,297,961.22

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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.