Home / 28,130,969.80-42,196,217.73-21,988,118.50

Finding the Fourth Proportional to 28,130,969.80, 42,196,217.73 and 21,988,118.50

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Solution

The fourth proportional to 28,130,969.80, 42,196,217.73 and 21,988,118.50 is: 32,981,992.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130,969.80 : 42,196,217.73 = 21,988,118.50 : x
  2. Step 2: Convert to fraction form
    28,130,969.80/42,196,217.73 = 21,988,118.50/x
  3. Step 3: Cross multiply
    28,130,969.80x = 42,196,217.73 × 21,988,118.50
  4. Step 4: Simplify right side
    28,130,969.80x = 927,815,435,933,942.25
  5. Step 5: Solve for x
    x = 927,815,435,933,942.25/28,130,969.80
  6. Step 6: Final answer
    x = 32,981,992.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.