Home / 30,921.52-46,381.92-21,425.08

Finding the Fourth Proportional to 30,921.52, 46,381.92 and 21,425.08

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Solution

The fourth proportional to 30,921.52, 46,381.92 and 21,425.08 is: 32,137.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,921.52 : 46,381.92 = 21,425.08 : x
  2. Step 2: Convert to fraction form
    30,921.52/46,381.92 = 21,425.08/x
  3. Step 3: Cross multiply
    30,921.52x = 46,381.92 × 21,425.08
  4. Step 4: Simplify right side
    30,921.52x = 993,736,346.55
  5. Step 5: Solve for x
    x = 993,736,346.55/30,921.52
  6. Step 6: Final answer
    x = 32,137.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.