Home / 20,964.71-28,931.54-12,012.03

Finding the Fourth Proportional to 20,964.71, 28,931.54 and 12,012.03

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Solution

The fourth proportional to 20,964.71, 28,931.54 and 12,012.03 is: 16,576.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.71 : 28,931.54 = 12,012.03 : x
  2. Step 2: Convert to fraction form
    20,964.71/28,931.54 = 12,012.03/x
  3. Step 3: Cross multiply
    20,964.71x = 28,931.54 × 12,012.03
  4. Step 4: Simplify right side
    20,964.71x = 347,526,664.95
  5. Step 5: Solve for x
    x = 347,526,664.95/20,964.71
  6. Step 6: Final answer
    x = 16,576.74

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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.