Home / 20,425.16-30,636.75-6,385.07

Finding the Fourth Proportional to 20,425.16, 30,636.75 and 6,385.07

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Solution

The fourth proportional to 20,425.16, 30,636.75 and 6,385.07 is: 9,577.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.16 : 30,636.75 = 6,385.07 : x
  2. Step 2: Convert to fraction form
    20,425.16/30,636.75 = 6,385.07/x
  3. Step 3: Cross multiply
    20,425.16x = 30,636.75 × 6,385.07
  4. Step 4: Simplify right side
    20,425.16x = 195,617,793.32
  5. Step 5: Solve for x
    x = 195,617,793.32/20,425.16
  6. Step 6: Final answer
    x = 9,577.30

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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.