Home / 31,388.94-43,319.16-17,964.40

Finding the Fourth Proportional to 31,388.94, 43,319.16 and 17,964.40

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Solution

The fourth proportional to 31,388.94, 43,319.16 and 17,964.40 is: 24,792.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,388.94 : 43,319.16 = 17,964.40 : x
  2. Step 2: Convert to fraction form
    31,388.94/43,319.16 = 17,964.40/x
  3. Step 3: Cross multiply
    31,388.94x = 43,319.16 × 17,964.40
  4. Step 4: Simplify right side
    31,388.94x = 778,202,628.08
  5. Step 5: Solve for x
    x = 778,202,628.08/31,388.94
  6. Step 6: Final answer
    x = 24,792.26

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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.