Home / 18,736.65-25,857.54-10,780.07

Finding the Fourth Proportional to 18,736.65, 25,857.54 and 10,780.07

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Solution

The fourth proportional to 18,736.65, 25,857.54 and 10,780.07 is: 14,877.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736.65 : 25,857.54 = 10,780.07 : x
  2. Step 2: Convert to fraction form
    18,736.65/25,857.54 = 10,780.07/x
  3. Step 3: Cross multiply
    18,736.65x = 25,857.54 × 10,780.07
  4. Step 4: Simplify right side
    18,736.65x = 278,745,961.94
  5. Step 5: Solve for x
    x = 278,745,961.94/18,736.65
  6. Step 6: Final answer
    x = 14,877.04

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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.