Home / 20,600.34-28,428.14-11,647.56

Finding the Fourth Proportional to 20,600.34, 28,428.14 and 11,647.56

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Solution

The fourth proportional to 20,600.34, 28,428.14 and 11,647.56 is: 16,073.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.34 : 28,428.14 = 11,647.56 : x
  2. Step 2: Convert to fraction form
    20,600.34/28,428.14 = 11,647.56/x
  3. Step 3: Cross multiply
    20,600.34x = 28,428.14 × 11,647.56
  4. Step 4: Simplify right side
    20,600.34x = 331,118,466.34
  5. Step 5: Solve for x
    x = 331,118,466.34/20,600.34
  6. Step 6: Final answer
    x = 16,073.45

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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.