Home / 19,768.65-27,280.21-11,702.72

Finding the Fourth Proportional to 19,768.65, 27,280.21 and 11,702.72

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Solution

The fourth proportional to 19,768.65, 27,280.21 and 11,702.72 is: 16,149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,768.65 : 27,280.21 = 11,702.72 : x
  2. Step 2: Convert to fraction form
    19,768.65/27,280.21 = 11,702.72/x
  3. Step 3: Cross multiply
    19,768.65x = 27,280.21 × 11,702.72
  4. Step 4: Simplify right side
    19,768.65x = 319,252,659.17
  5. Step 5: Solve for x
    x = 319,252,659.17/19,768.65
  6. Step 6: Final answer
    x = 16,149.44

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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.