Home / 30,800,732.75-42,498,215.89-18,235,548.20

Finding the Fourth Proportional to 30,800,732.75, 42,498,215.89 and 18,235,548.20

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Solution

The fourth proportional to 30,800,732.75, 42,498,215.89 and 18,235,548.20 is: 25,161,033.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,800,732.75 : 42,498,215.89 = 18,235,548.20 : x
  2. Step 2: Convert to fraction form
    30,800,732.75/42,498,215.89 = 18,235,548.20/x
  3. Step 3: Cross multiply
    30,800,732.75x = 42,498,215.89 × 18,235,548.20
  4. Step 4: Simplify right side
    30,800,732.75x = 774,978,264,169,855.50
  5. Step 5: Solve for x
    x = 774,978,264,169,855.50/30,800,732.75
  6. Step 6: Final answer
    x = 25,161,033.36

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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.