Home / 13,877.83-20,818.22-5,112.72

Finding the Fourth Proportional to 13,877.83, 20,818.22 and 5,112.72

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Solution

The fourth proportional to 13,877.83, 20,818.22 and 5,112.72 is: 7,669.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,877.83 : 20,818.22 = 5,112.72 : x
  2. Step 2: Convert to fraction form
    13,877.83/20,818.22 = 5,112.72/x
  3. Step 3: Cross multiply
    13,877.83x = 20,818.22 × 5,112.72
  4. Step 4: Simplify right side
    13,877.83x = 106,437,704.19
  5. Step 5: Solve for x
    x = 106,437,704.19/13,877.83
  6. Step 6: Final answer
    x = 7,669.62

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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.