Home / 20,807.64-31,133.70-12,046.68

Finding the Fourth Proportional to 20,807.64, 31,133.70 and 12,046.68

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Solution

The fourth proportional to 20,807.64, 31,133.70 and 12,046.68 is: 18,025.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.64 : 31,133.70 = 12,046.68 : x
  2. Step 2: Convert to fraction form
    20,807.64/31,133.70 = 12,046.68/x
  3. Step 3: Cross multiply
    20,807.64x = 31,133.70 × 12,046.68
  4. Step 4: Simplify right side
    20,807.64x = 375,057,721.12
  5. Step 5: Solve for x
    x = 375,057,721.12/20,807.64
  6. Step 6: Final answer
    x = 18,025.00

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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.