Home / 25,580.85-38,378.88-13,109.65

Finding the Fourth Proportional to 25,580.85, 38,378.88 and 13,109.65

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Solution

The fourth proportional to 25,580.85, 38,378.88 and 13,109.65 is: 19,668.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,580.85 : 38,378.88 = 13,109.65 : x
  2. Step 2: Convert to fraction form
    25,580.85/38,378.88 = 13,109.65/x
  3. Step 3: Cross multiply
    25,580.85x = 38,378.88 × 13,109.65
  4. Step 4: Simplify right side
    25,580.85x = 503,133,588.24
  5. Step 5: Solve for x
    x = 503,133,588.24/25,580.85
  6. Step 6: Final answer
    x = 19,668.37

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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.