Home / 30,235.20-45,334.88-9,168.80

Finding the Fourth Proportional to 30,235.20, 45,334.88 and 9,168.80

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Solution

The fourth proportional to 30,235.20, 45,334.88 and 9,168.80 is: 13,747.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,235.20 : 45,334.88 = 9,168.80 : x
  2. Step 2: Convert to fraction form
    30,235.20/45,334.88 = 9,168.80/x
  3. Step 3: Cross multiply
    30,235.20x = 45,334.88 × 9,168.80
  4. Step 4: Simplify right side
    30,235.20x = 415,666,447.74
  5. Step 5: Solve for x
    x = 415,666,447.74/30,235.20
  6. Step 6: Final answer
    x = 13,747.77

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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.