Home / 20,782.85-31,163.33-14,210.91

Finding the Fourth Proportional to 20,782.85, 31,163.33 and 14,210.91

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Solution

The fourth proportional to 20,782.85, 31,163.33 and 14,210.91 is: 21,308.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,782.85 : 31,163.33 = 14,210.91 : x
  2. Step 2: Convert to fraction form
    20,782.85/31,163.33 = 14,210.91/x
  3. Step 3: Cross multiply
    20,782.85x = 31,163.33 × 14,210.91
  4. Step 4: Simplify right side
    20,782.85x = 442,859,313.46
  5. Step 5: Solve for x
    x = 442,859,313.46/20,782.85
  6. Step 6: Final answer
    x = 21,308.89

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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.