Home / 11,122.79-15,342.78-7,345.96

Finding the Fourth Proportional to 11,122.79, 15,342.78 and 7,345.96

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Solution

The fourth proportional to 11,122.79, 15,342.78 and 7,345.96 is: 10,133.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.79 : 15,342.78 = 7,345.96 : x
  2. Step 2: Convert to fraction form
    11,122.79/15,342.78 = 7,345.96/x
  3. Step 3: Cross multiply
    11,122.79x = 15,342.78 × 7,345.96
  4. Step 4: Simplify right side
    11,122.79x = 112,707,439.80
  5. Step 5: Solve for x
    x = 112,707,439.80/11,122.79
  6. Step 6: Final answer
    x = 10,133.02

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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.