Home / 19,970.12-27,558.71-11,018.61

Finding the Fourth Proportional to 19,970.12, 27,558.71 and 11,018.61

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Solution

The fourth proportional to 19,970.12, 27,558.71 and 11,018.61 is: 15,205.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,970.12 : 27,558.71 = 11,018.61 : x
  2. Step 2: Convert to fraction form
    19,970.12/27,558.71 = 11,018.61/x
  3. Step 3: Cross multiply
    19,970.12x = 27,558.71 × 11,018.61
  4. Step 4: Simplify right side
    19,970.12x = 303,658,622.50
  5. Step 5: Solve for x
    x = 303,658,622.50/19,970.12
  6. Step 6: Final answer
    x = 15,205.65

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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.