Home / 11,122.32-15,342.13-7,345.49

Finding the Fourth Proportional to 11,122.32, 15,342.13 and 7,345.49

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Solution

The fourth proportional to 11,122.32, 15,342.13 and 7,345.49 is: 10,132.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.32 : 15,342.13 = 7,345.49 : x
  2. Step 2: Convert to fraction form
    11,122.32/15,342.13 = 7,345.49/x
  3. Step 3: Cross multiply
    11,122.32x = 15,342.13 × 7,345.49
  4. Step 4: Simplify right side
    11,122.32x = 112,695,510.03
  5. Step 5: Solve for x
    x = 112,695,510.03/11,122.32
  6. Step 6: Final answer
    x = 10,132.37

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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.