Home / 20,445.30-30,667.90-5,654.19

Finding the Fourth Proportional to 20,445.30, 30,667.90 and 5,654.19

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Solution

The fourth proportional to 20,445.30, 30,667.90 and 5,654.19 is: 8,481.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,445.30 : 30,667.90 = 5,654.19 : x
  2. Step 2: Convert to fraction form
    20,445.30/30,667.90 = 5,654.19/x
  3. Step 3: Cross multiply
    20,445.30x = 30,667.90 × 5,654.19
  4. Step 4: Simplify right side
    20,445.30x = 173,402,133.50
  5. Step 5: Solve for x
    x = 173,402,133.50/20,445.30
  6. Step 6: Final answer
    x = 8,481.27

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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.