Home / 20,572.14-30,859.36-5,779.91

Finding the Fourth Proportional to 20,572.14, 30,859.36 and 5,779.91

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Solution

The fourth proportional to 20,572.14, 30,859.36 and 5,779.91 is: 8,670.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.14 : 30,859.36 = 5,779.91 : x
  2. Step 2: Convert to fraction form
    20,572.14/30,859.36 = 5,779.91/x
  3. Step 3: Cross multiply
    20,572.14x = 30,859.36 × 5,779.91
  4. Step 4: Simplify right side
    20,572.14x = 178,364,245.08
  5. Step 5: Solve for x
    x = 178,364,245.08/20,572.14
  6. Step 6: Final answer
    x = 8,670.18

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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.