Home / 28,186.32-38,879.52-18,127.86

Finding the Fourth Proportional to 28,186.32, 38,879.52 and 18,127.86

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Solution

The fourth proportional to 28,186.32, 38,879.52 and 18,127.86 is: 25,005.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.32 : 38,879.52 = 18,127.86 : x
  2. Step 2: Convert to fraction form
    28,186.32/38,879.52 = 18,127.86/x
  3. Step 3: Cross multiply
    28,186.32x = 38,879.52 × 18,127.86
  4. Step 4: Simplify right side
    28,186.32x = 704,802,495.43
  5. Step 5: Solve for x
    x = 704,802,495.43/28,186.32
  6. Step 6: Final answer
    x = 25,005.13

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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.