Home / 19,379.55-26,739.63-12,675

Finding the Fourth Proportional to 19,379.55, 26,739.63 and 12,675

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Solution

The fourth proportional to 19,379.55, 26,739.63 and 12,675 is: 17,488.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,379.55 : 26,739.63 = 12,675 : x
  2. Step 2: Convert to fraction form
    19,379.55/26,739.63 = 12,675/x
  3. Step 3: Cross multiply
    19,379.55x = 26,739.63 × 12,675
  4. Step 4: Simplify right side
    19,379.55x = 338,924,810.25
  5. Step 5: Solve for x
    x = 338,924,810.25/19,379.55
  6. Step 6: Final answer
    x = 17,488.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.