Home / 14,990.80-22,486.20-5,128.60

Finding the Fourth Proportional to 14,990.80, 22,486.20 and 5,128.60

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Solution

The fourth proportional to 14,990.80, 22,486.20 and 5,128.60 is: 7,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,990.80 : 22,486.20 = 5,128.60 : x
  2. Step 2: Convert to fraction form
    14,990.80/22,486.20 = 5,128.60/x
  3. Step 3: Cross multiply
    14,990.80x = 22,486.20 × 5,128.60
  4. Step 4: Simplify right side
    14,990.80x = 115,322,725.32
  5. Step 5: Solve for x
    x = 115,322,725.32/14,990.80
  6. Step 6: Final answer
    x = 7,692.90

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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.