Home / 21,729.51-29,984.85-12,653.46

Finding the Fourth Proportional to 21,729.51, 29,984.85 and 12,653.46

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Solution

The fourth proportional to 21,729.51, 29,984.85 and 12,653.46 is: 17,460.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,729.51 : 29,984.85 = 12,653.46 : x
  2. Step 2: Convert to fraction form
    21,729.51/29,984.85 = 12,653.46/x
  3. Step 3: Cross multiply
    21,729.51x = 29,984.85 × 12,653.46
  4. Step 4: Simplify right side
    21,729.51x = 379,412,100.08
  5. Step 5: Solve for x
    x = 379,412,100.08/21,729.51
  6. Step 6: Final answer
    x = 17,460.68

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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.