Home / 12,724.32-17,560.24-7,688.48

Finding the Fourth Proportional to 12,724.32, 17,560.24 and 7,688.48

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Solution

The fourth proportional to 12,724.32, 17,560.24 and 7,688.48 is: 10,610.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,724.32 : 17,560.24 = 7,688.48 : x
  2. Step 2: Convert to fraction form
    12,724.32/17,560.24 = 7,688.48/x
  3. Step 3: Cross multiply
    12,724.32x = 17,560.24 × 7,688.48
  4. Step 4: Simplify right side
    12,724.32x = 135,011,554.04
  5. Step 5: Solve for x
    x = 135,011,554.04/12,724.32
  6. Step 6: Final answer
    x = 10,610.51

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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.