Home / 30,519.60-45,808.20-18,855.60

Finding the Fourth Proportional to 30,519.60, 45,808.20 and 18,855.60

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Solution

The fourth proportional to 30,519.60, 45,808.20 and 18,855.60 is: 28,301.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,519.60 : 45,808.20 = 18,855.60 : x
  2. Step 2: Convert to fraction form
    30,519.60/45,808.20 = 18,855.60/x
  3. Step 3: Cross multiply
    30,519.60x = 45,808.20 × 18,855.60
  4. Step 4: Simplify right side
    30,519.60x = 863,741,095.92
  5. Step 5: Solve for x
    x = 863,741,095.92/30,519.60
  6. Step 6: Final answer
    x = 28,301.19

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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.