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Finding the Fourth Proportional to 20,893.49, 31,343.16 and 6,103.49

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Solution

The fourth proportional to 20,893.49, 31,343.16 and 6,103.49 is: 9,156.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,893.49 : 31,343.16 = 6,103.49 : x
  2. Step 2: Convert to fraction form
    20,893.49/31,343.16 = 6,103.49/x
  3. Step 3: Cross multiply
    20,893.49x = 31,343.16 × 6,103.49
  4. Step 4: Simplify right side
    20,893.49x = 191,302,663.63
  5. Step 5: Solve for x
    x = 191,302,663.63/20,893.49
  6. Step 6: Final answer
    x = 9,156.09

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1.5x scale

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.