Home / 18,071.45-27,123.37-15,128.31

Finding the Fourth Proportional to 18,071.45, 27,123.37 and 15,128.31

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Solution

The fourth proportional to 18,071.45, 27,123.37 and 15,128.31 is: 22,706.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,071.45 : 27,123.37 = 15,128.31 : x
  2. Step 2: Convert to fraction form
    18,071.45/27,123.37 = 15,128.31/x
  3. Step 3: Cross multiply
    18,071.45x = 27,123.37 × 15,128.31
  4. Step 4: Simplify right side
    18,071.45x = 410,330,711.78
  5. Step 5: Solve for x
    x = 410,330,711.78/18,071.45
  6. Step 6: Final answer
    x = 22,706.03

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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.