Home / 30,180.12-45,255.59-12,645.24

Finding the Fourth Proportional to 30,180.12, 45,255.59 and 12,645.24

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Solution

The fourth proportional to 30,180.12, 45,255.59 and 12,645.24 is: 18,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,180.12 : 45,255.59 = 12,645.24 : x
  2. Step 2: Convert to fraction form
    30,180.12/45,255.59 = 12,645.24/x
  3. Step 3: Cross multiply
    30,180.12x = 45,255.59 × 12,645.24
  4. Step 4: Simplify right side
    30,180.12x = 572,267,796.89
  5. Step 5: Solve for x
    x = 572,267,796.89/30,180.12
  6. Step 6: Final answer
    x = 18,961.75

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1.5x scale

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.