Home / 13,412.76-20,119.57-6,393.54

Finding the Fourth Proportional to 13,412.76, 20,119.57 and 6,393.54

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Solution

The fourth proportional to 13,412.76, 20,119.57 and 6,393.54 is: 9,590.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.76 : 20,119.57 = 6,393.54 : x
  2. Step 2: Convert to fraction form
    13,412.76/20,119.57 = 6,393.54/x
  3. Step 3: Cross multiply
    13,412.76x = 20,119.57 × 6,393.54
  4. Step 4: Simplify right side
    13,412.76x = 128,635,259.59
  5. Step 5: Solve for x
    x = 128,635,259.59/13,412.76
  6. Step 6: Final answer
    x = 9,590.51

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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.