Home / 31,288.24-43,178.40-19,351.36

Finding the Fourth Proportional to 31,288.24, 43,178.40 and 19,351.36

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Solution

The fourth proportional to 31,288.24, 43,178.40 and 19,351.36 is: 26,705.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,288.24 : 43,178.40 = 19,351.36 : x
  2. Step 2: Convert to fraction form
    31,288.24/43,178.40 = 19,351.36/x
  3. Step 3: Cross multiply
    31,288.24x = 43,178.40 × 19,351.36
  4. Step 4: Simplify right side
    31,288.24x = 835,560,762.62
  5. Step 5: Solve for x
    x = 835,560,762.62/31,288.24
  6. Step 6: Final answer
    x = 26,705.27

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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.