Home / 21,170.23-31,748.85-14,638.39

Finding the Fourth Proportional to 21,170.23, 31,748.85 and 14,638.39

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Solution

The fourth proportional to 21,170.23, 31,748.85 and 14,638.39 is: 21,953.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.23 : 31,748.85 = 14,638.39 : x
  2. Step 2: Convert to fraction form
    21,170.23/31,748.85 = 14,638.39/x
  3. Step 3: Cross multiply
    21,170.23x = 31,748.85 × 14,638.39
  4. Step 4: Simplify right side
    21,170.23x = 464,751,968.98
  5. Step 5: Solve for x
    x = 464,751,968.98/21,170.23
  6. Step 6: Final answer
    x = 21,953.09

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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.