Home / 13,818.71-20,703.29-8,399.25

Finding the Fourth Proportional to 13,818.71, 20,703.29 and 8,399.25

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Solution

The fourth proportional to 13,818.71, 20,703.29 and 8,399.25 is: 12,583.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,818.71 : 20,703.29 = 8,399.25 : x
  2. Step 2: Convert to fraction form
    13,818.71/20,703.29 = 8,399.25/x
  3. Step 3: Cross multiply
    13,818.71x = 20,703.29 × 8,399.25
  4. Step 4: Simplify right side
    13,818.71x = 173,892,066.54
  5. Step 5: Solve for x
    x = 173,892,066.54/13,818.71
  6. Step 6: Final answer
    x = 12,583.82

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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.