Home / 30,783,676.84-42,462,964.68-20,329,789.48

Finding the Fourth Proportional to 30,783,676.84, 42,462,964.68 and 20,329,789.48

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Solution

The fourth proportional to 30,783,676.84, 42,462,964.68 and 20,329,789.48 is: 28,042,885.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,783,676.84 : 42,462,964.68 = 20,329,789.48 : x
  2. Step 2: Convert to fraction form
    30,783,676.84/42,462,964.68 = 20,329,789.48/x
  3. Step 3: Cross multiply
    30,783,676.84x = 42,462,964.68 × 20,329,789.48
  4. Step 4: Simplify right side
    30,783,676.84x = 863,263,132,641,075.62
  5. Step 5: Solve for x
    x = 863,263,132,641,075.62/30,783,676.84
  6. Step 6: Final answer
    x = 28,042,885.75

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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.