Home / 28,779.60-43,234.20-20,031.60

Finding the Fourth Proportional to 28,779.60, 43,234.20 and 20,031.60

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Solution

The fourth proportional to 28,779.60, 43,234.20 and 20,031.60 is: 30,092.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,779.60 : 43,234.20 = 20,031.60 : x
  2. Step 2: Convert to fraction form
    28,779.60/43,234.20 = 20,031.60/x
  3. Step 3: Cross multiply
    28,779.60x = 43,234.20 × 20,031.60
  4. Step 4: Simplify right side
    28,779.60x = 866,050,200.72
  5. Step 5: Solve for x
    x = 866,050,200.72/28,779.60
  6. Step 6: Final answer
    x = 30,092.50

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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.