Home / 20,835.42-28,764.68-14,385.13

Finding the Fourth Proportional to 20,835.42, 28,764.68 and 14,385.13

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Solution

The fourth proportional to 20,835.42, 28,764.68 and 14,385.13 is: 19,859.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.42 : 28,764.68 = 14,385.13 : x
  2. Step 2: Convert to fraction form
    20,835.42/28,764.68 = 14,385.13/x
  3. Step 3: Cross multiply
    20,835.42x = 28,764.68 × 14,385.13
  4. Step 4: Simplify right side
    20,835.42x = 413,783,661.21
  5. Step 5: Solve for x
    x = 413,783,661.21/20,835.42
  6. Step 6: Final answer
    x = 19,859.63

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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.