Home / 20,835.77-28,765.94-16,348.77

Finding the Fourth Proportional to 20,835.77, 28,765.94 and 16,348.77

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Solution

The fourth proportional to 20,835.77, 28,765.94 and 16,348.77 is: 22,571.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.77 : 28,765.94 = 16,348.77 : x
  2. Step 2: Convert to fraction form
    20,835.77/28,765.94 = 16,348.77/x
  3. Step 3: Cross multiply
    20,835.77x = 28,765.94 × 16,348.77
  4. Step 4: Simplify right side
    20,835.77x = 470,287,655.15
  5. Step 5: Solve for x
    x = 470,287,655.15/20,835.77
  6. Step 6: Final answer
    x = 22,571.17

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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.