Home / 20,682.64-31,012.19-14,116.78

Finding the Fourth Proportional to 20,682.64, 31,012.19 and 14,116.78

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Solution

The fourth proportional to 20,682.64, 31,012.19 and 14,116.78 is: 21,167.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,682.64 : 31,012.19 = 14,116.78 : x
  2. Step 2: Convert to fraction form
    20,682.64/31,012.19 = 14,116.78/x
  3. Step 3: Cross multiply
    20,682.64x = 31,012.19 × 14,116.78
  4. Step 4: Simplify right side
    20,682.64x = 437,792,263.55
  5. Step 5: Solve for x
    x = 437,792,263.55/20,682.64
  6. Step 6: Final answer
    x = 21,167.14

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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.