Home / 27,636.33-38,138.58-15,699.99

Finding the Fourth Proportional to 27,636.33, 38,138.58 and 15,699.99

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Solution

The fourth proportional to 27,636.33, 38,138.58 and 15,699.99 is: 21,666.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,636.33 : 38,138.58 = 15,699.99 : x
  2. Step 2: Convert to fraction form
    27,636.33/38,138.58 = 15,699.99/x
  3. Step 3: Cross multiply
    27,636.33x = 38,138.58 × 15,699.99
  4. Step 4: Simplify right side
    27,636.33x = 598,775,324.61
  5. Step 5: Solve for x
    x = 598,775,324.61/27,636.33
  6. Step 6: Final answer
    x = 21,666.24

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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.