Home / 30,512.08-45,779.10-18,811.72

Finding the Fourth Proportional to 30,512.08, 45,779.10 and 18,811.72

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Solution

The fourth proportional to 30,512.08, 45,779.10 and 18,811.72 is: 28,224.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,512.08 : 45,779.10 = 18,811.72 : x
  2. Step 2: Convert to fraction form
    30,512.08/45,779.10 = 18,811.72/x
  3. Step 3: Cross multiply
    30,512.08x = 45,779.10 × 18,811.72
  4. Step 4: Simplify right side
    30,512.08x = 861,183,611.05
  5. Step 5: Solve for x
    x = 861,183,611.05/30,512.08
  6. Step 6: Final answer
    x = 28,224.35

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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.