Home / 38,511.36-53,145-21,514.50

Finding the Fourth Proportional to 38,511.36, 53,145 and 21,514.50

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Solution

The fourth proportional to 38,511.36, 53,145 and 21,514.50 is: 29,689.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,511.36 : 53,145 = 21,514.50 : x
  2. Step 2: Convert to fraction form
    38,511.36/53,145 = 21,514.50/x
  3. Step 3: Cross multiply
    38,511.36x = 53,145 × 21,514.50
  4. Step 4: Simplify right side
    38,511.36x = 1,143,388,102.50
  5. Step 5: Solve for x
    x = 1,143,388,102.50/38,511.36
  6. Step 6: Final answer
    x = 29,689.63

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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.