Home / 12,725.05-17,560.75-7,688.57

Finding the Fourth Proportional to 12,725.05, 17,560.75 and 7,688.57

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Solution

The fourth proportional to 12,725.05, 17,560.75 and 7,688.57 is: 10,610.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,725.05 : 17,560.75 = 7,688.57 : x
  2. Step 2: Convert to fraction form
    12,725.05/17,560.75 = 7,688.57/x
  3. Step 3: Cross multiply
    12,725.05x = 17,560.75 × 7,688.57
  4. Step 4: Simplify right side
    12,725.05x = 135,017,055.63
  5. Step 5: Solve for x
    x = 135,017,055.63/12,725.05
  6. Step 6: Final answer
    x = 10,610.34

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Half scale
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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.