Home / 27,678-38,237.22-18,140.52

Finding the Fourth Proportional to 27,678, 38,237.22 and 18,140.52

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Solution

The fourth proportional to 27,678, 38,237.22 and 18,140.52 is: 25,061.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,678 : 38,237.22 = 18,140.52 : x
  2. Step 2: Convert to fraction form
    27,678/38,237.22 = 18,140.52/x
  3. Step 3: Cross multiply
    27,678x = 38,237.22 × 18,140.52
  4. Step 4: Simplify right side
    27,678x = 693,643,054.15
  5. Step 5: Solve for x
    x = 693,643,054.15/27,678
  6. Step 6: Final answer
    x = 25,061.17

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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.