Home / 20,317.34-28,035.39-11,821.76

Finding the Fourth Proportional to 20,317.34, 28,035.39 and 11,821.76

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Solution

The fourth proportional to 20,317.34, 28,035.39 and 11,821.76 is: 16,312.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.34 : 28,035.39 = 11,821.76 : x
  2. Step 2: Convert to fraction form
    20,317.34/28,035.39 = 11,821.76/x
  3. Step 3: Cross multiply
    20,317.34x = 28,035.39 × 11,821.76
  4. Step 4: Simplify right side
    20,317.34x = 331,427,652.09
  5. Step 5: Solve for x
    x = 331,427,652.09/20,317.34
  6. Step 6: Final answer
    x = 16,312.55

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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.