Home / 31,528.48-43,509.20-17,381.28

Finding the Fourth Proportional to 31,528.48, 43,509.20 and 17,381.28

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Solution

The fourth proportional to 31,528.48, 43,509.20 and 17,381.28 is: 23,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,528.48 : 43,509.20 = 17,381.28 : x
  2. Step 2: Convert to fraction form
    31,528.48/43,509.20 = 17,381.28/x
  3. Step 3: Cross multiply
    31,528.48x = 43,509.20 × 17,381.28
  4. Step 4: Simplify right side
    31,528.48x = 756,245,587.78
  5. Step 5: Solve for x
    x = 756,245,587.78/31,528.48
  6. Step 6: Final answer
    x = 23,986.11

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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.