Home / 19,285.20-28,941.84-12,725.28

Finding the Fourth Proportional to 19,285.20, 28,941.84 and 12,725.28

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Solution

The fourth proportional to 19,285.20, 28,941.84 and 12,725.28 is: 19,097.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,285.20 : 28,941.84 = 12,725.28 : x
  2. Step 2: Convert to fraction form
    19,285.20/28,941.84 = 12,725.28/x
  3. Step 3: Cross multiply
    19,285.20x = 28,941.84 × 12,725.28
  4. Step 4: Simplify right side
    19,285.20x = 368,293,017.72
  5. Step 5: Solve for x
    x = 368,293,017.72/19,285.20
  6. Step 6: Final answer
    x = 19,097.18

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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.