Home / 20,130.36-30,209.40-9,049.50

Finding the Fourth Proportional to 20,130.36, 30,209.40 and 9,049.50

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Solution

The fourth proportional to 20,130.36, 30,209.40 and 9,049.50 is: 13,580.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.36 : 30,209.40 = 9,049.50 : x
  2. Step 2: Convert to fraction form
    20,130.36/30,209.40 = 9,049.50/x
  3. Step 3: Cross multiply
    20,130.36x = 30,209.40 × 9,049.50
  4. Step 4: Simplify right side
    20,130.36x = 273,379,965.30
  5. Step 5: Solve for x
    x = 273,379,965.30/20,130.36
  6. Step 6: Final answer
    x = 13,580.48

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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.