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Finding the Fourth Proportional to 20,548.40, 30,779.40 and 17,092.40

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Solution

The fourth proportional to 20,548.40, 30,779.40 and 17,092.40 is: 25,602.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548.40 : 30,779.40 = 17,092.40 : x
  2. Step 2: Convert to fraction form
    20,548.40/30,779.40 = 17,092.40/x
  3. Step 3: Cross multiply
    20,548.40x = 30,779.40 × 17,092.40
  4. Step 4: Simplify right side
    20,548.40x = 526,093,816.56
  5. Step 5: Solve for x
    x = 526,093,816.56/20,548.40
  6. Step 6: Final answer
    x = 25,602.67

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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.