Home / 20,157.30-30,218.58-8,904.09

Finding the Fourth Proportional to 20,157.30, 30,218.58 and 8,904.09

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Solution

The fourth proportional to 20,157.30, 30,218.58 and 8,904.09 is: 13,348.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.30 : 30,218.58 = 8,904.09 : x
  2. Step 2: Convert to fraction form
    20,157.30/30,218.58 = 8,904.09/x
  3. Step 3: Cross multiply
    20,157.30x = 30,218.58 × 8,904.09
  4. Step 4: Simplify right side
    20,157.30x = 269,068,955.99
  5. Step 5: Solve for x
    x = 269,068,955.99/20,157.30
  6. Step 6: Final answer
    x = 13,348.46

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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.