Home / 20,376.72-30,566.70-8,690.04

Finding the Fourth Proportional to 20,376.72, 30,566.70 and 8,690.04

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Solution

The fourth proportional to 20,376.72, 30,566.70 and 8,690.04 is: 13,035.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376.72 : 30,566.70 = 8,690.04 : x
  2. Step 2: Convert to fraction form
    20,376.72/30,566.70 = 8,690.04/x
  3. Step 3: Cross multiply
    20,376.72x = 30,566.70 × 8,690.04
  4. Step 4: Simplify right side
    20,376.72x = 265,625,845.67
  5. Step 5: Solve for x
    x = 265,625,845.67/20,376.72
  6. Step 6: Final answer
    x = 13,035.75

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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.