Home / 19,639.38-29,455.80-9,108.96

Finding the Fourth Proportional to 19,639.38, 29,455.80 and 9,108.96

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Solution

The fourth proportional to 19,639.38, 29,455.80 and 9,108.96 is: 13,661.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.38 : 29,455.80 = 9,108.96 : x
  2. Step 2: Convert to fraction form
    19,639.38/29,455.80 = 9,108.96/x
  3. Step 3: Cross multiply
    19,639.38x = 29,455.80 × 9,108.96
  4. Step 4: Simplify right side
    19,639.38x = 268,311,703.97
  5. Step 5: Solve for x
    x = 268,311,703.97/19,639.38
  6. Step 6: Final answer
    x = 13,661.92

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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.