Home / 20,456.09-30,684.06-6,416.22

Finding the Fourth Proportional to 20,456.09, 30,684.06 and 6,416.22

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Solution

The fourth proportional to 20,456.09, 30,684.06 and 6,416.22 is: 9,624.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.09 : 30,684.06 = 6,416.22 : x
  2. Step 2: Convert to fraction form
    20,456.09/30,684.06 = 6,416.22/x
  3. Step 3: Cross multiply
    20,456.09x = 30,684.06 × 6,416.22
  4. Step 4: Simplify right side
    20,456.09x = 196,875,679.45
  5. Step 5: Solve for x
    x = 196,875,679.45/20,456.09
  6. Step 6: Final answer
    x = 9,624.31

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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.