Home / 11,429.90-15,738.21-10,005.61

Finding the Fourth Proportional to 11,429.90, 15,738.21 and 10,005.61

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Solution

The fourth proportional to 11,429.90, 15,738.21 and 10,005.61 is: 13,777.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,429.90 : 15,738.21 = 10,005.61 : x
  2. Step 2: Convert to fraction form
    11,429.90/15,738.21 = 10,005.61/x
  3. Step 3: Cross multiply
    11,429.90x = 15,738.21 × 10,005.61
  4. Step 4: Simplify right side
    11,429.90x = 157,470,391.36
  5. Step 5: Solve for x
    x = 157,470,391.36/11,429.90
  6. Step 6: Final answer
    x = 13,777.06

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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.