Home / 20,676.27-31,002.67-18,913.00

Finding the Fourth Proportional to 20,676.27, 31,002.67 and 18,913.00

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Solution

The fourth proportional to 20,676.27, 31,002.67 and 18,913.00 is: 28,358.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.27 : 31,002.67 = 18,913.00 : x
  2. Step 2: Convert to fraction form
    20,676.27/31,002.67 = 18,913.00/x
  3. Step 3: Cross multiply
    20,676.27x = 31,002.67 × 18,913.00
  4. Step 4: Simplify right side
    20,676.27x = 586,353,642.36
  5. Step 5: Solve for x
    x = 586,353,642.36/20,676.27
  6. Step 6: Final answer
    x = 28,358.77

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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.