Home / 18,640.50-25,723.89-10,257

Finding the Fourth Proportional to 18,640.50, 25,723.89 and 10,257

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Solution

The fourth proportional to 18,640.50, 25,723.89 and 10,257 is: 14,154.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.50 : 25,723.89 = 10,257 : x
  2. Step 2: Convert to fraction form
    18,640.50/25,723.89 = 10,257/x
  3. Step 3: Cross multiply
    18,640.50x = 25,723.89 × 10,257
  4. Step 4: Simplify right side
    18,640.50x = 263,849,939.73
  5. Step 5: Solve for x
    x = 263,849,939.73/18,640.50
  6. Step 6: Final answer
    x = 14,154.66

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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.