Home / 20,779.92-31,152.06-7,625.52

Finding the Fourth Proportional to 20,779.92, 31,152.06 and 7,625.52

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Solution

The fourth proportional to 20,779.92, 31,152.06 and 7,625.52 is: 11,431.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.92 : 31,152.06 = 7,625.52 : x
  2. Step 2: Convert to fraction form
    20,779.92/31,152.06 = 7,625.52/x
  3. Step 3: Cross multiply
    20,779.92x = 31,152.06 × 7,625.52
  4. Step 4: Simplify right side
    20,779.92x = 237,550,656.57
  5. Step 5: Solve for x
    x = 237,550,656.57/20,779.92
  6. Step 6: Final answer
    x = 11,431.74

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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.