Home / 18,828.07-25,975.34-13,161.31

Finding the Fourth Proportional to 18,828.07, 25,975.34 and 13,161.31

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Solution

The fourth proportional to 18,828.07, 25,975.34 and 13,161.31 is: 18,157.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828.07 : 25,975.34 = 13,161.31 : x
  2. Step 2: Convert to fraction form
    18,828.07/25,975.34 = 13,161.31/x
  3. Step 3: Cross multiply
    18,828.07x = 25,975.34 × 13,161.31
  4. Step 4: Simplify right side
    18,828.07x = 341,869,502.10
  5. Step 5: Solve for x
    x = 341,869,502.10/18,828.07
  6. Step 6: Final answer
    x = 18,157.44

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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.