Home / 20,340.10-30,474.27-17,813.09

Finding the Fourth Proportional to 20,340.10, 30,474.27 and 17,813.09

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Solution

The fourth proportional to 20,340.10, 30,474.27 and 17,813.09 is: 26,688.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340.10 : 30,474.27 = 17,813.09 : x
  2. Step 2: Convert to fraction form
    20,340.10/30,474.27 = 17,813.09/x
  3. Step 3: Cross multiply
    20,340.10x = 30,474.27 × 17,813.09
  4. Step 4: Simplify right side
    20,340.10x = 542,840,914.19
  5. Step 5: Solve for x
    x = 542,840,914.19/20,340.10
  6. Step 6: Final answer
    x = 26,688.21

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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.