Home / 18,640.80-25,723.74-10,257.28

Finding the Fourth Proportional to 18,640.80, 25,723.74 and 10,257.28

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Solution

The fourth proportional to 18,640.80, 25,723.74 and 10,257.28 is: 14,154.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.80 : 25,723.74 = 10,257.28 : x
  2. Step 2: Convert to fraction form
    18,640.80/25,723.74 = 10,257.28/x
  3. Step 3: Cross multiply
    18,640.80x = 25,723.74 × 10,257.28
  4. Step 4: Simplify right side
    18,640.80x = 263,855,603.83
  5. Step 5: Solve for x
    x = 263,855,603.83/18,640.80
  6. Step 6: Final answer
    x = 14,154.74

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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.