Home / 11,208.90-16,813.35-9,999.30

Finding the Fourth Proportional to 11,208.90, 16,813.35 and 9,999.30

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Solution

The fourth proportional to 11,208.90, 16,813.35 and 9,999.30 is: 14,998.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,208.90 : 16,813.35 = 9,999.30 : x
  2. Step 2: Convert to fraction form
    11,208.90/16,813.35 = 9,999.30/x
  3. Step 3: Cross multiply
    11,208.90x = 16,813.35 × 9,999.30
  4. Step 4: Simplify right side
    11,208.90x = 168,121,730.66
  5. Step 5: Solve for x
    x = 168,121,730.66/11,208.90
  6. Step 6: Final answer
    x = 14,998.95

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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.