Home / 20,108.40-30,118.68-9,698.28

Finding the Fourth Proportional to 20,108.40, 30,118.68 and 9,698.28

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Solution

The fourth proportional to 20,108.40, 30,118.68 and 9,698.28 is: 14,526.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.40 : 30,118.68 = 9,698.28 : x
  2. Step 2: Convert to fraction form
    20,108.40/30,118.68 = 9,698.28/x
  3. Step 3: Cross multiply
    20,108.40x = 30,118.68 × 9,698.28
  4. Step 4: Simplify right side
    20,108.40x = 292,099,391.87
  5. Step 5: Solve for x
    x = 292,099,391.87/20,108.40
  6. Step 6: Final answer
    x = 14,526.24

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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.