Home / 13,845.45-19,105.65-7,877.19

Finding the Fourth Proportional to 13,845.45, 19,105.65 and 7,877.19

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Solution

The fourth proportional to 13,845.45, 19,105.65 and 7,877.19 is: 10,869.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.45 : 19,105.65 = 7,877.19 : x
  2. Step 2: Convert to fraction form
    13,845.45/19,105.65 = 7,877.19/x
  3. Step 3: Cross multiply
    13,845.45x = 19,105.65 × 7,877.19
  4. Step 4: Simplify right side
    13,845.45x = 150,498,835.12
  5. Step 5: Solve for x
    x = 150,498,835.12/13,845.45
  6. Step 6: Final answer
    x = 10,869.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.