Home / 30,981.88-46,456.34-12,261.16

Finding the Fourth Proportional to 30,981.88, 46,456.34 and 12,261.16

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Solution

The fourth proportional to 30,981.88, 46,456.34 and 12,261.16 is: 18,385.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.88 : 46,456.34 = 12,261.16 : x
  2. Step 2: Convert to fraction form
    30,981.88/46,456.34 = 12,261.16/x
  3. Step 3: Cross multiply
    30,981.88x = 46,456.34 × 12,261.16
  4. Step 4: Simplify right side
    30,981.88x = 569,608,617.75
  5. Step 5: Solve for x
    x = 569,608,617.75/30,981.88
  6. Step 6: Final answer
    x = 18,385.22

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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.