Home / 48,668.36-72,997.48-13,128.20

Finding the Fourth Proportional to 48,668.36, 72,997.48 and 13,128.20

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Solution

The fourth proportional to 48,668.36, 72,997.48 and 13,128.20 is: 19,690.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,668.36 : 72,997.48 = 13,128.20 : x
  2. Step 2: Convert to fraction form
    48,668.36/72,997.48 = 13,128.20/x
  3. Step 3: Cross multiply
    48,668.36x = 72,997.48 × 13,128.20
  4. Step 4: Simplify right side
    48,668.36x = 958,325,516.94
  5. Step 5: Solve for x
    x = 958,325,516.94/48,668.36
  6. Step 6: Final answer
    x = 19,690.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.