Home / 20,671.42-31,005.50-6,627.71

Finding the Fourth Proportional to 20,671.42, 31,005.50 and 6,627.71

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Solution

The fourth proportional to 20,671.42, 31,005.50 and 6,627.71 is: 9,941.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.42 : 31,005.50 = 6,627.71 : x
  2. Step 2: Convert to fraction form
    20,671.42/31,005.50 = 6,627.71/x
  3. Step 3: Cross multiply
    20,671.42x = 31,005.50 × 6,627.71
  4. Step 4: Simplify right side
    20,671.42x = 205,495,462.41
  5. Step 5: Solve for x
    x = 205,495,462.41/20,671.42
  6. Step 6: Final answer
    x = 9,941.04

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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.