Home / 20,633.40-28,488.48-18,225

Finding the Fourth Proportional to 20,633.40, 28,488.48 and 18,225

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Solution

The fourth proportional to 20,633.40, 28,488.48 and 18,225 is: 25,163.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.40 : 28,488.48 = 18,225 : x
  2. Step 2: Convert to fraction form
    20,633.40/28,488.48 = 18,225/x
  3. Step 3: Cross multiply
    20,633.40x = 28,488.48 × 18,225
  4. Step 4: Simplify right side
    20,633.40x = 519,202,548
  5. Step 5: Solve for x
    x = 519,202,548/20,633.40
  6. Step 6: Final answer
    x = 25,163.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.