Home / 20,779.33-31,172.07-7,630.68

Finding the Fourth Proportional to 20,779.33, 31,172.07 and 7,630.68

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Solution

The fourth proportional to 20,779.33, 31,172.07 and 7,630.68 is: 11,447.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.33 : 31,172.07 = 7,630.68 : x
  2. Step 2: Convert to fraction form
    20,779.33/31,172.07 = 7,630.68/x
  3. Step 3: Cross multiply
    20,779.33x = 31,172.07 × 7,630.68
  4. Step 4: Simplify right side
    20,779.33x = 237,864,032.25
  5. Step 5: Solve for x
    x = 237,864,032.25/20,779.33
  6. Step 6: Final answer
    x = 11,447.15

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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.