Home / 20,671.53-30,997.27-12,125.31

Finding the Fourth Proportional to 20,671.53, 30,997.27 and 12,125.31

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Solution

The fourth proportional to 20,671.53, 30,997.27 and 12,125.31 is: 18,182.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.53 : 30,997.27 = 12,125.31 : x
  2. Step 2: Convert to fraction form
    20,671.53/30,997.27 = 12,125.31/x
  3. Step 3: Cross multiply
    20,671.53x = 30,997.27 × 12,125.31
  4. Step 4: Simplify right side
    20,671.53x = 375,851,547.08
  5. Step 5: Solve for x
    x = 375,851,547.08/20,671.53
  6. Step 6: Final answer
    x = 18,182.08

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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.