Home / 20,402.36-30,567.29-8,529.96

Finding the Fourth Proportional to 20,402.36, 30,567.29 and 8,529.96

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Solution

The fourth proportional to 20,402.36, 30,567.29 and 8,529.96 is: 12,779.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.36 : 30,567.29 = 8,529.96 : x
  2. Step 2: Convert to fraction form
    20,402.36/30,567.29 = 8,529.96/x
  3. Step 3: Cross multiply
    20,402.36x = 30,567.29 × 8,529.96
  4. Step 4: Simplify right side
    20,402.36x = 260,737,718.36
  5. Step 5: Solve for x
    x = 260,737,718.36/20,402.36
  6. Step 6: Final answer
    x = 12,779.79

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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.