Home / 13,845.28-19,107.06-7,877.98

Finding the Fourth Proportional to 13,845.28, 19,107.06 and 7,877.98

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Solution

The fourth proportional to 13,845.28, 19,107.06 and 7,877.98 is: 10,871.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.28 : 19,107.06 = 7,877.98 : x
  2. Step 2: Convert to fraction form
    13,845.28/19,107.06 = 7,877.98/x
  3. Step 3: Cross multiply
    13,845.28x = 19,107.06 × 7,877.98
  4. Step 4: Simplify right side
    13,845.28x = 150,525,036.54
  5. Step 5: Solve for x
    x = 150,525,036.54/13,845.28
  6. Step 6: Final answer
    x = 10,871.94

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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.