Home / 27,684.88-38,220.93-18,280.78

Finding the Fourth Proportional to 27,684.88, 38,220.93 and 18,280.78

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Solution

The fourth proportional to 27,684.88, 38,220.93 and 18,280.78 is: 25,237.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,684.88 : 38,220.93 = 18,280.78 : x
  2. Step 2: Convert to fraction form
    27,684.88/38,220.93 = 18,280.78/x
  3. Step 3: Cross multiply
    27,684.88x = 38,220.93 × 18,280.78
  4. Step 4: Simplify right side
    27,684.88x = 698,708,412.73
  5. Step 5: Solve for x
    x = 698,708,412.73/27,684.88
  6. Step 6: Final answer
    x = 25,237.91

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Half scale
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Double scale
Find fourth proportional to 27,685.88, 38,222.31 and 18,281.78
Similar ratio
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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.