Home / 12,421.70-17,142.33-6,756.86

Finding the Fourth Proportional to 12,421.70, 17,142.33 and 6,756.86

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Solution

The fourth proportional to 12,421.70, 17,142.33 and 6,756.86 is: 9,324.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.70 : 17,142.33 = 6,756.86 : x
  2. Step 2: Convert to fraction form
    12,421.70/17,142.33 = 6,756.86/x
  3. Step 3: Cross multiply
    12,421.70x = 17,142.33 × 6,756.86
  4. Step 4: Simplify right side
    12,421.70x = 115,828,323.88
  5. Step 5: Solve for x
    x = 115,828,323.88/12,421.70
  6. Step 6: Final answer
    x = 9,324.68

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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.