Home / 13,869.63-20,807.15-6,078.38

Finding the Fourth Proportional to 13,869.63, 20,807.15 and 6,078.38

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Solution

The fourth proportional to 13,869.63, 20,807.15 and 6,078.38 is: 9,118.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.63 : 20,807.15 = 6,078.38 : x
  2. Step 2: Convert to fraction form
    13,869.63/20,807.15 = 6,078.38/x
  3. Step 3: Cross multiply
    13,869.63x = 20,807.15 × 6,078.38
  4. Step 4: Simplify right side
    13,869.63x = 126,473,629.99
  5. Step 5: Solve for x
    x = 126,473,629.99/13,869.63
  6. Step 6: Final answer
    x = 9,118.75

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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.