Home / 13,416.96-20,125.56-6,397.68

Finding the Fourth Proportional to 13,416.96, 20,125.56 and 6,397.68

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Solution

The fourth proportional to 13,416.96, 20,125.56 and 6,397.68 is: 9,596.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.96 : 20,125.56 = 6,397.68 : x
  2. Step 2: Convert to fraction form
    13,416.96/20,125.56 = 6,397.68/x
  3. Step 3: Cross multiply
    13,416.96x = 20,125.56 × 6,397.68
  4. Step 4: Simplify right side
    13,416.96x = 128,756,892.70
  5. Step 5: Solve for x
    x = 128,756,892.70/13,416.96
  6. Step 6: Final answer
    x = 9,596.58

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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.