Home / 19,179.10-28,779.45-7,490.80

Finding the Fourth Proportional to 19,179.10, 28,779.45 and 7,490.80

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Solution

The fourth proportional to 19,179.10, 28,779.45 and 7,490.80 is: 11,240.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,179.10 : 28,779.45 = 7,490.80 : x
  2. Step 2: Convert to fraction form
    19,179.10/28,779.45 = 7,490.80/x
  3. Step 3: Cross multiply
    19,179.10x = 28,779.45 × 7,490.80
  4. Step 4: Simplify right side
    19,179.10x = 215,581,104.06
  5. Step 5: Solve for x
    x = 215,581,104.06/19,179.10
  6. Step 6: Final answer
    x = 11,240.42

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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.