Home / 20,569.45-30,849.35-5,779.78

Finding the Fourth Proportional to 20,569.45, 30,849.35 and 5,779.78

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Solution

The fourth proportional to 20,569.45, 30,849.35 and 5,779.78 is: 8,668.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.45 : 30,849.35 = 5,779.78 : x
  2. Step 2: Convert to fraction form
    20,569.45/30,849.35 = 5,779.78/x
  3. Step 3: Cross multiply
    20,569.45x = 30,849.35 × 5,779.78
  4. Step 4: Simplify right side
    20,569.45x = 178,302,301.90
  5. Step 5: Solve for x
    x = 178,302,301.90/20,569.45
  6. Step 6: Final answer
    x = 8,668.31

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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.