Home / 19,140.80-28,702.56-6,829.12

Finding the Fourth Proportional to 19,140.80, 28,702.56 and 6,829.12

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Solution

The fourth proportional to 19,140.80, 28,702.56 and 6,829.12 is: 10,240.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,140.80 : 28,702.56 = 6,829.12 : x
  2. Step 2: Convert to fraction form
    19,140.80/28,702.56 = 6,829.12/x
  3. Step 3: Cross multiply
    19,140.80x = 28,702.56 × 6,829.12
  4. Step 4: Simplify right side
    19,140.80x = 196,013,226.55
  5. Step 5: Solve for x
    x = 196,013,226.55/19,140.80
  6. Step 6: Final answer
    x = 10,240.60

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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.