Home / 34,779.20-52,147.20-19,980.80

Finding the Fourth Proportional to 34,779.20, 52,147.20 and 19,980.80

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Solution

The fourth proportional to 34,779.20, 52,147.20 and 19,980.80 is: 29,958.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,779.20 : 52,147.20 = 19,980.80 : x
  2. Step 2: Convert to fraction form
    34,779.20/52,147.20 = 19,980.80/x
  3. Step 3: Cross multiply
    34,779.20x = 52,147.20 × 19,980.80
  4. Step 4: Simplify right side
    34,779.20x = 1,041,942,773.76
  5. Step 5: Solve for x
    x = 1,041,942,773.76/34,779.20
  6. Step 6: Final answer
    x = 29,958.79

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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.