Home / 13,857.29-20,785.75-9,403.91

Finding the Fourth Proportional to 13,857.29, 20,785.75 and 9,403.91

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Solution

The fourth proportional to 13,857.29, 20,785.75 and 9,403.91 is: 14,105.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.29 : 20,785.75 = 9,403.91 : x
  2. Step 2: Convert to fraction form
    13,857.29/20,785.75 = 9,403.91/x
  3. Step 3: Cross multiply
    13,857.29x = 20,785.75 × 9,403.91
  4. Step 4: Simplify right side
    13,857.29x = 195,467,272.79
  5. Step 5: Solve for x
    x = 195,467,272.79/13,857.29
  6. Step 6: Final answer
    x = 14,105.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.