Home / 13,977.44-19,288.86-7,689.77

Finding the Fourth Proportional to 13,977.44, 19,288.86 and 7,689.77

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Solution

The fourth proportional to 13,977.44, 19,288.86 and 7,689.77 is: 10,611.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,977.44 : 19,288.86 = 7,689.77 : x
  2. Step 2: Convert to fraction form
    13,977.44/19,288.86 = 7,689.77/x
  3. Step 3: Cross multiply
    13,977.44x = 19,288.86 × 7,689.77
  4. Step 4: Simplify right side
    13,977.44x = 148,326,896.96
  5. Step 5: Solve for x
    x = 148,326,896.96/13,977.44
  6. Step 6: Final answer
    x = 10,611.88

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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.