Home / 31,415.68-43,368.48-19,936.36

Finding the Fourth Proportional to 31,415.68, 43,368.48 and 19,936.36

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Solution

The fourth proportional to 31,415.68, 43,368.48 and 19,936.36 is: 27,521.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,415.68 : 43,368.48 = 19,936.36 : x
  2. Step 2: Convert to fraction form
    31,415.68/43,368.48 = 19,936.36/x
  3. Step 3: Cross multiply
    31,415.68x = 43,368.48 × 19,936.36
  4. Step 4: Simplify right side
    31,415.68x = 864,609,629.93
  5. Step 5: Solve for x
    x = 864,609,629.93/31,415.68
  6. Step 6: Final answer
    x = 27,521.60

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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.