Home / 12,986.16-19,476.36-5,192.88

Finding the Fourth Proportional to 12,986.16, 19,476.36 and 5,192.88

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Solution

The fourth proportional to 12,986.16, 19,476.36 and 5,192.88 is: 7,788.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.16 : 19,476.36 = 5,192.88 : x
  2. Step 2: Convert to fraction form
    12,986.16/19,476.36 = 5,192.88/x
  3. Step 3: Cross multiply
    12,986.16x = 19,476.36 × 5,192.88
  4. Step 4: Simplify right side
    12,986.16x = 101,138,400.32
  5. Step 5: Solve for x
    x = 101,138,400.32/12,986.16
  6. Step 6: Final answer
    x = 7,788.17

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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.