Home / 13,869.49-20,800.50-6,466.72

Finding the Fourth Proportional to 13,869.49, 20,800.50 and 6,466.72

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Solution

The fourth proportional to 13,869.49, 20,800.50 and 6,466.72 is: 9,698.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.49 : 20,800.50 = 6,466.72 : x
  2. Step 2: Convert to fraction form
    13,869.49/20,800.50 = 6,466.72/x
  3. Step 3: Cross multiply
    13,869.49x = 20,800.50 × 6,466.72
  4. Step 4: Simplify right side
    13,869.49x = 134,511,009.36
  5. Step 5: Solve for x
    x = 134,511,009.36/13,869.49
  6. Step 6: Final answer
    x = 9,698.34

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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.