Home / 20,779.60-31,166.16-7,625.20

Finding the Fourth Proportional to 20,779.60, 31,166.16 and 7,625.20

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Solution

The fourth proportional to 20,779.60, 31,166.16 and 7,625.20 is: 11,436.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.60 : 31,166.16 = 7,625.20 : x
  2. Step 2: Convert to fraction form
    20,779.60/31,166.16 = 7,625.20/x
  3. Step 3: Cross multiply
    20,779.60x = 31,166.16 × 7,625.20
  4. Step 4: Simplify right side
    20,779.60x = 237,648,203.23
  5. Step 5: Solve for x
    x = 237,648,203.23/20,779.60
  6. Step 6: Final answer
    x = 11,436.61

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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.