Home / 11,577.24-15,979.55-7,392.78

Finding the Fourth Proportional to 11,577.24, 15,979.55 and 7,392.78

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Solution

The fourth proportional to 11,577.24, 15,979.55 and 7,392.78 is: 10,203.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,577.24 : 15,979.55 = 7,392.78 : x
  2. Step 2: Convert to fraction form
    11,577.24/15,979.55 = 7,392.78/x
  3. Step 3: Cross multiply
    11,577.24x = 15,979.55 × 7,392.78
  4. Step 4: Simplify right side
    11,577.24x = 118,133,260.69
  5. Step 5: Solve for x
    x = 118,133,260.69/11,577.24
  6. Step 6: Final answer
    x = 10,203.92

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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.