Home / 19,191.18-28,779.18-9,327.54

Finding the Fourth Proportional to 19,191.18, 28,779.18 and 9,327.54

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Solution

The fourth proportional to 19,191.18, 28,779.18 and 9,327.54 is: 13,987.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,191.18 : 28,779.18 = 9,327.54 : x
  2. Step 2: Convert to fraction form
    19,191.18/28,779.18 = 9,327.54/x
  3. Step 3: Cross multiply
    19,191.18x = 28,779.18 × 9,327.54
  4. Step 4: Simplify right side
    19,191.18x = 268,438,952.62
  5. Step 5: Solve for x
    x = 268,438,952.62/19,191.18
  6. Step 6: Final answer
    x = 13,987.62

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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.