Home / 20,316.33-30,469.65-8,470.28

Finding the Fourth Proportional to 20,316.33, 30,469.65 and 8,470.28

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Solution

The fourth proportional to 20,316.33, 30,469.65 and 8,470.28 is: 12,703.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.33 : 30,469.65 = 8,470.28 : x
  2. Step 2: Convert to fraction form
    20,316.33/30,469.65 = 8,470.28/x
  3. Step 3: Cross multiply
    20,316.33x = 30,469.65 × 8,470.28
  4. Step 4: Simplify right side
    20,316.33x = 258,086,467.00
  5. Step 5: Solve for x
    x = 258,086,467.00/20,316.33
  6. Step 6: Final answer
    x = 12,703.40

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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.