Home / 10,826.80-16,235.40-4,985.20

Finding the Fourth Proportional to 10,826.80, 16,235.40 and 4,985.20

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Solution

The fourth proportional to 10,826.80, 16,235.40 and 4,985.20 is: 7,475.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,826.80 : 16,235.40 = 4,985.20 : x
  2. Step 2: Convert to fraction form
    10,826.80/16,235.40 = 4,985.20/x
  3. Step 3: Cross multiply
    10,826.80x = 16,235.40 × 4,985.20
  4. Step 4: Simplify right side
    10,826.80x = 80,936,716.08
  5. Step 5: Solve for x
    x = 80,936,716.08/10,826.80
  6. Step 6: Final answer
    x = 7,475.59

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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.