Home / 21,613.75-32,420.62-16,690.57

Finding the Fourth Proportional to 21,613.75, 32,420.62 and 16,690.57

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Solution

The fourth proportional to 21,613.75, 32,420.62 and 16,690.57 is: 25,035.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,613.75 : 32,420.62 = 16,690.57 : x
  2. Step 2: Convert to fraction form
    21,613.75/32,420.62 = 16,690.57/x
  3. Step 3: Cross multiply
    21,613.75x = 32,420.62 × 16,690.57
  4. Step 4: Simplify right side
    21,613.75x = 541,118,465.45
  5. Step 5: Solve for x
    x = 541,118,465.45/21,613.75
  6. Step 6: Final answer
    x = 25,035.85

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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.