Home / 19,730.10-27,229.50-11,772.30

Finding the Fourth Proportional to 19,730.10, 27,229.50 and 11,772.30

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Solution

The fourth proportional to 19,730.10, 27,229.50 and 11,772.30 is: 16,246.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,730.10 : 27,229.50 = 11,772.30 : x
  2. Step 2: Convert to fraction form
    19,730.10/27,229.50 = 11,772.30/x
  3. Step 3: Cross multiply
    19,730.10x = 27,229.50 × 11,772.30
  4. Step 4: Simplify right side
    19,730.10x = 320,553,842.85
  5. Step 5: Solve for x
    x = 320,553,842.85/19,730.10
  6. Step 6: Final answer
    x = 16,246.94

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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.