Home / 11,209.20-16,805.70-6,280.35

Finding the Fourth Proportional to 11,209.20, 16,805.70 and 6,280.35

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Solution

The fourth proportional to 11,209.20, 16,805.70 and 6,280.35 is: 9,415.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.20 : 16,805.70 = 6,280.35 : x
  2. Step 2: Convert to fraction form
    11,209.20/16,805.70 = 6,280.35/x
  3. Step 3: Cross multiply
    11,209.20x = 16,805.70 × 6,280.35
  4. Step 4: Simplify right side
    11,209.20x = 105,545,678.00
  5. Step 5: Solve for x
    x = 105,545,678.00/11,209.20
  6. Step 6: Final answer
    x = 9,415.99

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1.5x scale

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.