Home / 11,931.39-16,465.68-7,212.96

Finding the Fourth Proportional to 11,931.39, 16,465.68 and 7,212.96

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Solution

The fourth proportional to 11,931.39, 16,465.68 and 7,212.96 is: 9,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931.39 : 16,465.68 = 7,212.96 : x
  2. Step 2: Convert to fraction form
    11,931.39/16,465.68 = 7,212.96/x
  3. Step 3: Cross multiply
    11,931.39x = 16,465.68 × 7,212.96
  4. Step 4: Simplify right side
    11,931.39x = 118,766,291.21
  5. Step 5: Solve for x
    x = 118,766,291.21/11,931.39
  6. Step 6: Final answer
    x = 9,954.10

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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.