Home / 13,021.20-17,967.60-7,354.80

Finding the Fourth Proportional to 13,021.20, 17,967.60 and 7,354.80

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Solution

The fourth proportional to 13,021.20, 17,967.60 and 7,354.80 is: 10,148.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.20 : 17,967.60 = 7,354.80 : x
  2. Step 2: Convert to fraction form
    13,021.20/17,967.60 = 7,354.80/x
  3. Step 3: Cross multiply
    13,021.20x = 17,967.60 × 7,354.80
  4. Step 4: Simplify right side
    13,021.20x = 132,148,104.48
  5. Step 5: Solve for x
    x = 132,148,104.48/13,021.20
  6. Step 6: Final answer
    x = 10,148.69

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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.