Home / 30,355.72-41,893.88-18,418.12

Finding the Fourth Proportional to 30,355.72, 41,893.88 and 18,418.12

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Solution

The fourth proportional to 30,355.72, 41,893.88 and 18,418.12 is: 25,418.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,355.72 : 41,893.88 = 18,418.12 : x
  2. Step 2: Convert to fraction form
    30,355.72/41,893.88 = 18,418.12/x
  3. Step 3: Cross multiply
    30,355.72x = 41,893.88 × 18,418.12
  4. Step 4: Simplify right side
    30,355.72x = 771,606,509.11
  5. Step 5: Solve for x
    x = 771,606,509.11/30,355.72
  6. Step 6: Final answer
    x = 25,418.82

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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.