Home / 27,685.92-38,212.80-18,120.28

Finding the Fourth Proportional to 27,685.92, 38,212.80 and 18,120.28

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Solution

The fourth proportional to 27,685.92, 38,212.80 and 18,120.28 is: 25,010.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,685.92 : 38,212.80 = 18,120.28 : x
  2. Step 2: Convert to fraction form
    27,685.92/38,212.80 = 18,120.28/x
  3. Step 3: Cross multiply
    27,685.92x = 38,212.80 × 18,120.28
  4. Step 4: Simplify right side
    27,685.92x = 692,426,635.58
  5. Step 5: Solve for x
    x = 692,426,635.58/27,685.92
  6. Step 6: Final answer
    x = 25,010.06

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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.