Home / 21,373.05-29,495.93-12,877.84

Finding the Fourth Proportional to 21,373.05, 29,495.93 and 12,877.84

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Solution

The fourth proportional to 21,373.05, 29,495.93 and 12,877.84 is: 17,772.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,373.05 : 29,495.93 = 12,877.84 : x
  2. Step 2: Convert to fraction form
    21,373.05/29,495.93 = 12,877.84/x
  3. Step 3: Cross multiply
    21,373.05x = 29,495.93 × 12,877.84
  4. Step 4: Simplify right side
    21,373.05x = 379,843,867.19
  5. Step 5: Solve for x
    x = 379,843,867.19/21,373.05
  6. Step 6: Final answer
    x = 17,772.09

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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.