Home / 13,887.30-19,173.42-12,392.65

Finding the Fourth Proportional to 13,887.30, 19,173.42 and 12,392.65

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Solution

The fourth proportional to 13,887.30, 19,173.42 and 12,392.65 is: 17,109.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,887.30 : 19,173.42 = 12,392.65 : x
  2. Step 2: Convert to fraction form
    13,887.30/19,173.42 = 12,392.65/x
  3. Step 3: Cross multiply
    13,887.30x = 19,173.42 × 12,392.65
  4. Step 4: Simplify right side
    13,887.30x = 237,609,483.36
  5. Step 5: Solve for x
    x = 237,609,483.36/13,887.30
  6. Step 6: Final answer
    x = 17,109.84

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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.