Home / 20,009.80-30,000.30-11,247.40

Finding the Fourth Proportional to 20,009.80, 30,000.30 and 11,247.40

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Solution

The fourth proportional to 20,009.80, 30,000.30 and 11,247.40 is: 16,863.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,009.80 : 30,000.30 = 11,247.40 : x
  2. Step 2: Convert to fraction form
    20,009.80/30,000.30 = 11,247.40/x
  3. Step 3: Cross multiply
    20,009.80x = 30,000.30 × 11,247.40
  4. Step 4: Simplify right side
    20,009.80x = 337,425,374.22
  5. Step 5: Solve for x
    x = 337,425,374.22/20,009.80
  6. Step 6: Final answer
    x = 16,863.01

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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.