Home / 30,578.18-45,871.85-10,855.09

Finding the Fourth Proportional to 30,578.18, 45,871.85 and 10,855.09

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Solution

The fourth proportional to 30,578.18, 45,871.85 and 10,855.09 is: 16,284.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,578.18 : 45,871.85 = 10,855.09 : x
  2. Step 2: Convert to fraction form
    30,578.18/45,871.85 = 10,855.09/x
  3. Step 3: Cross multiply
    30,578.18x = 45,871.85 × 10,855.09
  4. Step 4: Simplify right side
    30,578.18x = 497,942,776.58
  5. Step 5: Solve for x
    x = 497,942,776.58/30,578.18
  6. Step 6: Final answer
    x = 16,284.25

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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.