Home / 12,523.80-18,779.64-4,620.96

Finding the Fourth Proportional to 12,523.80, 18,779.64 and 4,620.96

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Solution

The fourth proportional to 12,523.80, 18,779.64 and 4,620.96 is: 6,929.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,523.80 : 18,779.64 = 4,620.96 : x
  2. Step 2: Convert to fraction form
    12,523.80/18,779.64 = 4,620.96/x
  3. Step 3: Cross multiply
    12,523.80x = 18,779.64 × 4,620.96
  4. Step 4: Simplify right side
    12,523.80x = 86,779,965.25
  5. Step 5: Solve for x
    x = 86,779,965.25/12,523.80
  6. Step 6: Final answer
    x = 6,929.20

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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.