Home / 12,914.64-19,370.88-5,121.36

Finding the Fourth Proportional to 12,914.64, 19,370.88 and 5,121.36

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Solution

The fourth proportional to 12,914.64, 19,370.88 and 5,121.36 is: 7,681.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,914.64 : 19,370.88 = 5,121.36 : x
  2. Step 2: Convert to fraction form
    12,914.64/19,370.88 = 5,121.36/x
  3. Step 3: Cross multiply
    12,914.64x = 19,370.88 × 5,121.36
  4. Step 4: Simplify right side
    12,914.64x = 99,205,250.00
  5. Step 5: Solve for x
    x = 99,205,250.00/12,914.64
  6. Step 6: Final answer
    x = 7,681.61

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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.