Home / 12,725.70-19,100.28-9,171.50

Finding the Fourth Proportional to 12,725.70, 19,100.28 and 9,171.50

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Solution

The fourth proportional to 12,725.70, 19,100.28 and 9,171.50 is: 13,765.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,725.70 : 19,100.28 = 9,171.50 : x
  2. Step 2: Convert to fraction form
    12,725.70/19,100.28 = 9,171.50/x
  3. Step 3: Cross multiply
    12,725.70x = 19,100.28 × 9,171.50
  4. Step 4: Simplify right side
    12,725.70x = 175,178,218.02
  5. Step 5: Solve for x
    x = 175,178,218.02/12,725.70
  6. Step 6: Final answer
    x = 13,765.70

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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.