Home / 20,684.16-31,025.70-6,645.15

Finding the Fourth Proportional to 20,684.16, 31,025.70 and 6,645.15

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Solution

The fourth proportional to 20,684.16, 31,025.70 and 6,645.15 is: 9,967.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.16 : 31,025.70 = 6,645.15 : x
  2. Step 2: Convert to fraction form
    20,684.16/31,025.70 = 6,645.15/x
  3. Step 3: Cross multiply
    20,684.16x = 31,025.70 × 6,645.15
  4. Step 4: Simplify right side
    20,684.16x = 206,170,430.36
  5. Step 5: Solve for x
    x = 206,170,430.36/20,684.16
  6. Step 6: Final answer
    x = 9,967.55

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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.