Home / 14,188.97-19,580.58-7,815.42

Finding the Fourth Proportional to 14,188.97, 19,580.58 and 7,815.42

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Solution

The fourth proportional to 14,188.97, 19,580.58 and 7,815.42 is: 10,785.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,188.97 : 19,580.58 = 7,815.42 : x
  2. Step 2: Convert to fraction form
    14,188.97/19,580.58 = 7,815.42/x
  3. Step 3: Cross multiply
    14,188.97x = 19,580.58 × 7,815.42
  4. Step 4: Simplify right side
    14,188.97x = 153,030,456.54
  5. Step 5: Solve for x
    x = 153,030,456.54/14,188.97
  6. Step 6: Final answer
    x = 10,785.17

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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.