Home / 20,319.05-28,045.93-11,822.82

Finding the Fourth Proportional to 20,319.05, 28,045.93 and 11,822.82

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Solution

The fourth proportional to 20,319.05, 28,045.93 and 11,822.82 is: 16,318.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.05 : 28,045.93 = 11,822.82 : x
  2. Step 2: Convert to fraction form
    20,319.05/28,045.93 = 11,822.82/x
  3. Step 3: Cross multiply
    20,319.05x = 28,045.93 × 11,822.82
  4. Step 4: Simplify right side
    20,319.05x = 331,581,982.12
  5. Step 5: Solve for x
    x = 331,581,982.12/20,319.05
  6. Step 6: Final answer
    x = 16,318.77

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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.