Home / 31,378.72-43,304.16-19,448.32

Finding the Fourth Proportional to 31,378.72, 43,304.16 and 19,448.32

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Solution

The fourth proportional to 31,378.72, 43,304.16 and 19,448.32 is: 26,839.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,378.72 : 43,304.16 = 19,448.32 : x
  2. Step 2: Convert to fraction form
    31,378.72/43,304.16 = 19,448.32/x
  3. Step 3: Cross multiply
    31,378.72x = 43,304.16 × 19,448.32
  4. Step 4: Simplify right side
    31,378.72x = 842,193,161.01
  5. Step 5: Solve for x
    x = 842,193,161.01/31,378.72
  6. Step 6: Final answer
    x = 26,839.63

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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.