Home / 14,918.87-20,588.57-8,205

Finding the Fourth Proportional to 14,918.87, 20,588.57 and 8,205

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Solution

The fourth proportional to 14,918.87, 20,588.57 and 8,205 is: 11,323.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,918.87 : 20,588.57 = 8,205 : x
  2. Step 2: Convert to fraction form
    14,918.87/20,588.57 = 8,205/x
  3. Step 3: Cross multiply
    14,918.87x = 20,588.57 × 8,205
  4. Step 4: Simplify right side
    14,918.87x = 168,929,216.85
  5. Step 5: Solve for x
    x = 168,929,216.85/14,918.87
  6. Step 6: Final answer
    x = 11,323.19

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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.