Home / 12,519.49-18,779.19-3,160.25

Finding the Fourth Proportional to 12,519.49, 18,779.19 and 3,160.25

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Solution

The fourth proportional to 12,519.49, 18,779.19 and 3,160.25 is: 4,740.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.49 : 18,779.19 = 3,160.25 : x
  2. Step 2: Convert to fraction form
    12,519.49/18,779.19 = 3,160.25/x
  3. Step 3: Cross multiply
    12,519.49x = 18,779.19 × 3,160.25
  4. Step 4: Simplify right side
    12,519.49x = 59,346,996.87
  5. Step 5: Solve for x
    x = 59,346,996.87/12,519.49
  6. Step 6: Final answer
    x = 4,740.37

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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.