Home / 11,931.81-16,467.35-6,627.21

Finding the Fourth Proportional to 11,931.81, 16,467.35 and 6,627.21

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Solution

The fourth proportional to 11,931.81, 16,467.35 and 6,627.21 is: 9,146.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931.81 : 16,467.35 = 6,627.21 : x
  2. Step 2: Convert to fraction form
    11,931.81/16,467.35 = 6,627.21/x
  3. Step 3: Cross multiply
    11,931.81x = 16,467.35 × 6,627.21
  4. Step 4: Simplify right side
    11,931.81x = 109,132,553.46
  5. Step 5: Solve for x
    x = 109,132,553.46/11,931.81
  6. Step 6: Final answer
    x = 9,146.35

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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.