Home / 20,983.74-28,954.20-12,029.64

Finding the Fourth Proportional to 20,983.74, 28,954.20 and 12,029.64

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Solution

The fourth proportional to 20,983.74, 28,954.20 and 12,029.64 is: 16,598.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.74 : 28,954.20 = 12,029.64 : x
  2. Step 2: Convert to fraction form
    20,983.74/28,954.20 = 12,029.64/x
  3. Step 3: Cross multiply
    20,983.74x = 28,954.20 × 12,029.64
  4. Step 4: Simplify right side
    20,983.74x = 348,308,602.49
  5. Step 5: Solve for x
    x = 348,308,602.49/20,983.74
  6. Step 6: Final answer
    x = 16,598.98

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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.