Home / 15,776.34-21,771.62-8,702.82

Finding the Fourth Proportional to 15,776.34, 21,771.62 and 8,702.82

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Solution

The fourth proportional to 15,776.34, 21,771.62 and 8,702.82 is: 12,010.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,776.34 : 21,771.62 = 8,702.82 : x
  2. Step 2: Convert to fraction form
    15,776.34/21,771.62 = 8,702.82/x
  3. Step 3: Cross multiply
    15,776.34x = 21,771.62 × 8,702.82
  4. Step 4: Simplify right side
    15,776.34x = 189,474,489.97
  5. Step 5: Solve for x
    x = 189,474,489.97/15,776.34
  6. Step 6: Final answer
    x = 12,010.04

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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.