Home / 20,383.10-30,529.49-15,668.40

Finding the Fourth Proportional to 20,383.10, 30,529.49 and 15,668.40

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Solution

The fourth proportional to 20,383.10, 30,529.49 and 15,668.40 is: 23,467.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383.10 : 30,529.49 = 15,668.40 : x
  2. Step 2: Convert to fraction form
    20,383.10/30,529.49 = 15,668.40/x
  3. Step 3: Cross multiply
    20,383.10x = 30,529.49 × 15,668.40
  4. Step 4: Simplify right side
    20,383.10x = 478,348,261.12
  5. Step 5: Solve for x
    x = 478,348,261.12/20,383.10
  6. Step 6: Final answer
    x = 23,467.89

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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.