Home / 19,128.04-28,702.92-7,439.68

Finding the Fourth Proportional to 19,128.04, 28,702.92 and 7,439.68

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Solution

The fourth proportional to 19,128.04, 28,702.92 and 7,439.68 is: 11,163.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.04 : 28,702.92 = 7,439.68 : x
  2. Step 2: Convert to fraction form
    19,128.04/28,702.92 = 7,439.68/x
  3. Step 3: Cross multiply
    19,128.04x = 28,702.92 × 7,439.68
  4. Step 4: Simplify right side
    19,128.04x = 213,540,539.87
  5. Step 5: Solve for x
    x = 213,540,539.87/19,128.04
  6. Step 6: Final answer
    x = 11,163.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.