Home / 27,702.78-38,230.62-15,128.34

Finding the Fourth Proportional to 27,702.78, 38,230.62 and 15,128.34

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Solution

The fourth proportional to 27,702.78, 38,230.62 and 15,128.34 is: 20,877.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,702.78 : 38,230.62 = 15,128.34 : x
  2. Step 2: Convert to fraction form
    27,702.78/38,230.62 = 15,128.34/x
  3. Step 3: Cross multiply
    27,702.78x = 38,230.62 × 15,128.34
  4. Step 4: Simplify right side
    27,702.78x = 578,365,817.77
  5. Step 5: Solve for x
    x = 578,365,817.77/27,702.78
  6. Step 6: Final answer
    x = 20,877.54

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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.