Home / 21,858.35-30,174.80-17,085.24

Finding the Fourth Proportional to 21,858.35, 30,174.80 and 17,085.24

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Solution

The fourth proportional to 21,858.35, 30,174.80 and 17,085.24 is: 23,585.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,858.35 : 30,174.80 = 17,085.24 : x
  2. Step 2: Convert to fraction form
    21,858.35/30,174.80 = 17,085.24/x
  3. Step 3: Cross multiply
    21,858.35x = 30,174.80 × 17,085.24
  4. Step 4: Simplify right side
    21,858.35x = 515,543,614.53
  5. Step 5: Solve for x
    x = 515,543,614.53/21,858.35
  6. Step 6: Final answer
    x = 23,585.67

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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.