Home / 27,128.08-40,687.90-10,495.80

Finding the Fourth Proportional to 27,128.08, 40,687.90 and 10,495.80

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Solution

The fourth proportional to 27,128.08, 40,687.90 and 10,495.80 is: 15,742.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,128.08 : 40,687.90 = 10,495.80 : x
  2. Step 2: Convert to fraction form
    27,128.08/40,687.90 = 10,495.80/x
  3. Step 3: Cross multiply
    27,128.08x = 40,687.90 × 10,495.80
  4. Step 4: Simplify right side
    27,128.08x = 427,052,060.82
  5. Step 5: Solve for x
    x = 427,052,060.82/27,128.08
  6. Step 6: Final answer
    x = 15,742.07

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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.