Home / 30,828.79-42,544.58-18,725.18

Finding the Fourth Proportional to 30,828.79, 42,544.58 and 18,725.18

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Solution

The fourth proportional to 30,828.79, 42,544.58 and 18,725.18 is: 25,841.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,828.79 : 42,544.58 = 18,725.18 : x
  2. Step 2: Convert to fraction form
    30,828.79/42,544.58 = 18,725.18/x
  3. Step 3: Cross multiply
    30,828.79x = 42,544.58 × 18,725.18
  4. Step 4: Simplify right side
    30,828.79x = 796,654,824.90
  5. Step 5: Solve for x
    x = 796,654,824.90/30,828.79
  6. Step 6: Final answer
    x = 25,841.27

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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.