Home / 21,347.49-29,459.99-11,787.35

Finding the Fourth Proportional to 21,347.49, 29,459.99 and 11,787.35

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Solution

The fourth proportional to 21,347.49, 29,459.99 and 11,787.35 is: 16,266.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.49 : 29,459.99 = 11,787.35 : x
  2. Step 2: Convert to fraction form
    21,347.49/29,459.99 = 11,787.35/x
  3. Step 3: Cross multiply
    21,347.49x = 29,459.99 × 11,787.35
  4. Step 4: Simplify right side
    21,347.49x = 347,255,213.13
  5. Step 5: Solve for x
    x = 347,255,213.13/21,347.49
  6. Step 6: Final answer
    x = 16,266.79

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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.