Home / 14,150.80-21,226.20-7,128.10

Finding the Fourth Proportional to 14,150.80, 21,226.20 and 7,128.10

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Solution

The fourth proportional to 14,150.80, 21,226.20 and 7,128.10 is: 10,692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,150.80 : 21,226.20 = 7,128.10 : x
  2. Step 2: Convert to fraction form
    14,150.80/21,226.20 = 7,128.10/x
  3. Step 3: Cross multiply
    14,150.80x = 21,226.20 × 7,128.10
  4. Step 4: Simplify right side
    14,150.80x = 151,302,476.22
  5. Step 5: Solve for x
    x = 151,302,476.22/14,150.80
  6. Step 6: Final answer
    x = 10,692.15

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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.