Home / 20,165.90-30,216.45-16,861.10

Finding the Fourth Proportional to 20,165.90, 30,216.45 and 16,861.10

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Solution

The fourth proportional to 20,165.90, 30,216.45 and 16,861.10 is: 25,264.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.90 : 30,216.45 = 16,861.10 : x
  2. Step 2: Convert to fraction form
    20,165.90/30,216.45 = 16,861.10/x
  3. Step 3: Cross multiply
    20,165.90x = 30,216.45 × 16,861.10
  4. Step 4: Simplify right side
    20,165.90x = 509,482,585.10
  5. Step 5: Solve for x
    x = 509,482,585.10/20,165.90
  6. Step 6: Final answer
    x = 25,264.56

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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.