Home / 21,050.66-29,054.78-13,881.86

Finding the Fourth Proportional to 21,050.66, 29,054.78 and 13,881.86

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Solution

The fourth proportional to 21,050.66, 29,054.78 and 13,881.86 is: 19,160.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,050.66 : 29,054.78 = 13,881.86 : x
  2. Step 2: Convert to fraction form
    21,050.66/29,054.78 = 13,881.86/x
  3. Step 3: Cross multiply
    21,050.66x = 29,054.78 × 13,881.86
  4. Step 4: Simplify right side
    21,050.66x = 403,334,441.15
  5. Step 5: Solve for x
    x = 403,334,441.15/21,050.66
  6. Step 6: Final answer
    x = 19,160.18

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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.