Home / 14,231.36-19,639.16-7,857.95

Finding the Fourth Proportional to 14,231.36, 19,639.16 and 7,857.95

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Solution

The fourth proportional to 14,231.36, 19,639.16 and 7,857.95 is: 10,843.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,231.36 : 19,639.16 = 7,857.95 : x
  2. Step 2: Convert to fraction form
    14,231.36/19,639.16 = 7,857.95/x
  3. Step 3: Cross multiply
    14,231.36x = 19,639.16 × 7,857.95
  4. Step 4: Simplify right side
    14,231.36x = 154,323,399.84
  5. Step 5: Solve for x
    x = 154,323,399.84/14,231.36
  6. Step 6: Final answer
    x = 10,843.90

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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.