Home / 18,768.30-25,899.85-10,270.39

Finding the Fourth Proportional to 18,768.30, 25,899.85 and 10,270.39

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Solution

The fourth proportional to 18,768.30, 25,899.85 and 10,270.39 is: 14,172.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,768.30 : 25,899.85 = 10,270.39 : x
  2. Step 2: Convert to fraction form
    18,768.30/25,899.85 = 10,270.39/x
  3. Step 3: Cross multiply
    18,768.30x = 25,899.85 × 10,270.39
  4. Step 4: Simplify right side
    18,768.30x = 266,001,379.59
  5. Step 5: Solve for x
    x = 266,001,379.59/18,768.30
  6. Step 6: Final answer
    x = 14,172.91

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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.