Home / 20,682.13-31,011.45-14,116.27

Finding the Fourth Proportional to 20,682.13, 31,011.45 and 14,116.27

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Solution

The fourth proportional to 20,682.13, 31,011.45 and 14,116.27 is: 21,166.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.13 : 31,011.45 = 14,116.27 : x
  2. Step 2: Convert to fraction form
    20,682.13/31,011.45 = 14,116.27/x
  3. Step 3: Cross multiply
    20,682.13x = 31,011.45 × 14,116.27
  4. Step 4: Simplify right side
    20,682.13x = 437,766,001.29
  5. Step 5: Solve for x
    x = 437,766,001.29/20,682.13
  6. Step 6: Final answer
    x = 21,166.39

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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.