Home / 20,488.24-30,735.60-12,174.40

Finding the Fourth Proportional to 20,488.24, 30,735.60 and 12,174.40

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Solution

The fourth proportional to 20,488.24, 30,735.60 and 12,174.40 is: 18,263.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.24 : 30,735.60 = 12,174.40 : x
  2. Step 2: Convert to fraction form
    20,488.24/30,735.60 = 12,174.40/x
  3. Step 3: Cross multiply
    20,488.24x = 30,735.60 × 12,174.40
  4. Step 4: Simplify right side
    20,488.24x = 374,187,488.64
  5. Step 5: Solve for x
    x = 374,187,488.64/20,488.24
  6. Step 6: Final answer
    x = 18,263.53

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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.